What is the problem of pop up windows making corrupt localstore.rdf trying to create a test here, kind of hard not knowing know how to create a popup window to begin with.

Popup windows using JavaScript
[pop021]
[pop022]
[pop023]
[<a href="023.htm" onclick="return popitup('023.htm')">pop023</a>]

based on JavaScript - Popups -- http://www.quirksmode.org/js/popup.html
[pop024]
[<a href="024.htm" onclick="return popitup('024.htm')">pop024</a>]

[pop028]
[<a href="javascript:window.open('028.htm', 'popup', 'width=400,height=300,resizable=1');void%200;">pop028</A>]  

window.resizeTo(x,y)

This test okay but even though naming the popup window won't get three new windows, and it creates a new page with an error message "[object Window]" when it doesn't have Void 0;.
[pop031]
[pop032]
[pop033]

{ window.open("http://www.videogamedeals.com", "WinC","width=550,height=400,toolbar=no, location=no,directories=no,status=no,menubar=no, scrollbars=no,resizable=yes,copyhistory=no") }

target="_top" -- prevents Back button from going back, but can see entries in Back/Forward list
This is perfectly normal behavior.  To see it in action ...

1. Open this page in a NEW window/tab and position so you can see this window and the new window/tab -- all the rest in that new tab.
2. then click on 002 003 004 so they open in the same tab
3. then open http://dmcritchie.mvps.org/firefox/tabs.htm
4. right click on the BACK toolbar button to see everything is in order
5. use a find "_top" use the second link
6. check that back buttons shows all of the items, BUT now when you
7. click on the BACK button you can only go back to the page that said it was TOP.

Why am I getting multiple versions of the same page showing in the Back (and Forward) buttons? -- resolved by poster as a problem with the "NoScript" extension.  My question would be, why would anyone use NoScript at all, when there is Adblock Plus (with decent filter subscriptions: EasyList, Fanboy's Adblock List), or YesScript.

Extensions for Tables, see Extension list on home page

This is 001_with_underscore.htm, and is an expanded version of 001.htm – the numbers at the right can be used to test scrolling options.  They are line numbers only so far as the column they are in and are independent of main body of content.

Table without borders
AAA	BBB	CCC	DDD

Tab Capacity and other Tab Testing would be greatly enhanced if you install the "Tab Counter" extension, a simple extension that displays the open tabs count of the window for each open window.  The default placement is at far right end of the menu bar just before the throbber button, if present.

Tab Capacity and Tab History and Tab Navigation Testing:
You can open several tabs each with several webpages to test tab navigation, or open all of the 120 tabs above into separate tabs all at once with the Linky extension.  If you want to see all of your tabs at once see information in Tabs Bar Minimal Size | userstyles.org (style 9043).

Tab Navigation Keyboard Shortcuts can be tested with this page.  To see what is available use a "Highlight All" from the Find toolbar (Ctrl+F) for "tab" on Firefox and other Browser Keyboard Shortcuts (Comparison Table), you are looking for "tab" and "tabs" related material, ignore "table..." references.

Tab Navigation Toolbar Buttons can be tested with this page.  The Combined Back/Forward Button upon right-clicking the button or clicking on the single drop-down arrow will display pages opened in current tab in a "heap" with the latest tabs at the top, and the currently displayed page with a blue sphere instead of it's own favicon.  To test open several links in the same tab.

Extensions and features that can be tested here:
Extensions:  Dafizilla Table2Clipboard (Table handling / paste to Excel), Grab and Drag (like a Mac), Launchy (see how this page looks in other installed browsers), Linky (open links at once into tabs); Link Visitor (Mark link(s) as visited or unvisited), Mouse Zoom, Image Zoom (independent zooming of an image), Multiple Tab Handler (enhanced tab features via tab context menu), Perma Tabs Mod (protect a tab), Split Browser, Tab Clicking Options (close a tab), Tab Counter; Table Tools (sort, filter), .
Features: Tabbed Browsing, Vertical scrolling; Zooming and rechecking vertical scrolling at different zoom levels.
Styles:

• Tab Color Underscoring active/read/unread | userstyles.org, Colors the bottom border of a tab with RED for active tab, BLUE for a normal tab, GREEN for a still unread tab.  Broken in Firefox 3.6 see Bug 487242 (next)
• Bug 487242 - Regression: in userChrome.css no longer possible to distinguish between unvisited tabs, visited tabs, and the selected tab (Regression in userChrome.css)  Please vote to get this fixed!!!  Rather than waiting for 3.6 to come out and find this doesn't work any longer.

Mouse   (#mouse)  

Preferences that can be tested here:
Autoscrolling: autocontext.prefs-autoScroll, general.autoScroll

System Mouse settings for various applications

• ../excel/mouse.txt For all applications includes Excel, Firefox, and others.  IntelliMouse, LogiTech Mouse
• Mouse Usage in Firefox
• Mousewheel. usage in about:config entries (MozillaZine KB)

Auto Scrolling [tools,options,general] middle-click to start/stop [middle-click on my mouse set to Enter].

Smooth Scrolling [tools,options,general] (scrolling on a web page moves page content pixelwise rather than line-by-line):

general.autoScroll	default	boolean	true
general.smoothScroll	default	boolean	false
gfx.use_text_smoothing_setting	default	boolean	false
grabAndDrag.smoothStop	default	boolean	true
toolkit.scrollbox.smoothScroll	default	boolean	true

Mouse Scrolling:
My screen resolutions:  1024x768 primary, 1280x1024 secondary monitor.  On the primary I see 30 lines with normal toolbars, and 38 lines in full screen mode with only tabs bar showing (44 and 48 on secondary).  If the primary is set to 1280x800, I see 32 and scroll 31 (see 39, scroll 38 in full screen with only tabs bar).  In order to get the proper scrolling by page with the mouse wheel,  one mousewheel.* about:config value was changed in Firefox.

For a mousewheel with notchiness like the original IntelliPoint Mouse (corded)
   mousewheel.withcontrolkey.action   user set   integer   0  
   mousewheel.withnokey.action   user set   integer   1   (Scroll document by one page - old link) (new link)
   mousewheel.withnokey.sysnumlines   user set   boolean   false  

For a mousewheel with continuous scrolling (no notchiness) like Microsoft Wireless Notebook Presentator Mouse (8000 which is an IntelliPoint mouse). Tip: click above/below scroller thumb to scroll exactly one page.
   mousewheel.withcontrolkey.action   user set   integer   0  
   mousewheel.withcontrolkey.numlines   user set   integer   6   (instead of default of 1)
   mousewheel.withnokey.action   user set   integer   0  
   mousewheel.withnokey.numlines   user set   integer 1 (instead of default of 6)
   mousewheel.withnokey.sysnumlines   user set   boolean   true  

MOUSE SHORTCUTS -- Firefox (#mouseshortcuts)		Google Chrome	Internet Explorer	Opera	Safari
Open link in Background Tab	Ctrl+click	Ctrl+click	Ctrl+Click	Ctrl+Shift+click	Ctrl+click
Open link in Foreground Tab	Ctrl+Shift+Click, Middle-click	Ctrl+Shift+click	Ctrl+Shift+click	Shift+click	Ctrl+Shift+click
Open Link in New Window	Shift+Click	Shift+Click	Shift+Click	(N/A)	Ctrl+Shift+Alt+click

The complete table can be seen in Keyboard Shortcuts

See Keyboard Shortcuts (#newtab)
The area with red text under Mouse Shortcuts can be reversed to match other Browsers, select Tools → Options → Tabs → [x] When I open a link in a new tab, switch to it immediately.  This is the same setting that can be changed by setting browser.tabs.loadInBackground to False to set focus on new tabs opened from links (load in foreground)
So that bookmarks open the same way as links, these about:config settings should be *same* as each other:
- browser.tabs.loadBookmarksInBackground (default is False), controls focus of bookmarks opened in new tab
- browser.tabs.loadInBackground (default is True), controls focus of links opened in new tab

MouseOver   (#mouseover)

Once you've tested this on the page the only way to turn it off is to use Reset [F5].

Test of Text Area Resizer   (#resize)

• Text Area Resizer & Mover :: Add-ons for Firefox, by NettiCat.  The extension allowed one to easily resize or even move textareas.  (Unfortunately the extension was removed by the author when Mozilla indicated it would be built-in.  Like most such promises it is a meaningless gesture as it applied only to multi-line text areas, and Mozilla's own pages prevent resizing of text areas with their own stylesheets used on their support pages, which by the way are very fragile and lose form data if you switch to another page and return.)

To move:  Double-click text area then move with right mouse button while green and before red.
To resize:  Drag text area left (to shorten) or right (to extend) with right mouse button.

Next check to see if it interferes with logon/signin for GMail, MozillaZine(forums), MozillaZine(kb), Verizon, support.mozilla.com, Yahoo,

Appears to work okay for those logins.  To get userid drop-down for a login, it is actually click to select, then click to see drop-down, it is not double-click.  So double-click should work to activate the move without interfering with normal Firefox form usage.

Extension marked as removed by its author (I don't have a substitute, author's reason 3.7 has features) (but 3.7 does not do single line boxes, can't tolerate overwidening, and some others. So not much of a solution as you can see)

Some tests (#forms)

• Keyword shortcut "cnt:", summary of selected words, characters, etc -- http://charcount.appspot.com/
• Keyword shortcut "character:count works on single line forms such as search at top of page, and Spell Check boxes, but not in multiline formats as shown here.

You can put counters or count-down counters into your webpage.

• Character Counting Remaining on Textarea - JSFiddle
  Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
• jquery - Count characters in textarea - Stack Overflow
  
• javascript - Count textarea characters - Stack Overflow
  
• javascript - Count textarea characters - Stack Overflow
  

Some more to test with

1. Google Voice text message area for phone is too small needs, to be 2-4 times larger or resizable. See contacts or inbox then click on "Text" and try to fill in textbox with 160 "W"s.  The textarea within hidden until exposed within a DIV.
2. Support questions, until posted a reply is not resizeable in two directions, and is only resizeable under the vertical scroller, once question becomes long enough to require it. (test here on 851111 without submitting).
3. There are cases where text entry area is resizeable within a dialog but does not look like it where you have to move the lower edge of the textbox within bookmark using "Add Bookmark Here ²" extension (see third pictorial example).
4. Two examples of large text boxes:  dict, and dict2; the first includes my an earlier copy of my dictionary additions, the second is more streamlined.  Purpose of both is to look at text for possible additions to the current browser's dictionary.

Message Box (Prompt box) tests   (#msgbox)

• 1...5...10...15...20...25...30...35...40­...45...50­...55...60...65...70...75 (65 in 3.6.13, 43 in 4.0b9)
• 1nnn5nnn10nnn15nnn20nnn25nnn30nnn35nnn40­nnn45nnn50­nnn55nnn60nnn65nnn70nnn75 (41 in 3.6.13, 26 in 4.0b9pre)
• 1xxx5xxx10xxx15xxx20xxx25xxx30xxx35xxx40­xxx45xxx50­xxx55xxx60xxx65xxx70xxx75 (50 in 3.6.13, 29 in 4.0b9pre)

complaints about the "Alert" and "Prompt" dialog boxes in Firefox 4.0: 

• Alert Box -- Chaos 1  
• Prompt box 2 
  Resulting images
• Try the Alert box and the Prompt box in both Firefox 3.6.13 and in a Firefox 4.0 beta 8 or 9.
• Pollute the parent window.
• It is the text that is important not the overwhelming ghostly image of a severity warning.
• I can't cut and paste in either direction and review things around me these new dialog boxes are a major problem as are all of the other door hangers or boxes to tabs.
• As it now stands in Minefield one might have to bring up another Window to browse the same window as the prompt box applies to, just to see what is going on.
• Already had our addons ruined to the point of having to work with troubleshooting report rather than addons to see what we have for extensions in a more compact form. (and how many people happen to have extensions installed so they can sort on a table).
• I put more trust in the Window close button (missing in 4.0) than in the "Cancel" text button. (security issue)
• Now 4.0b8 users are seeing these problems as well.
• Problem also seen in context dialog of about:config
• Problem is not seen in Firefox generated error messages

Spell Checker   (#spellcheck)

Test of Spell Checker in a Form. Submit will add to the URL on the location bar of no consequence.

Using the spell checker, Firefox automatically checks the spelling of words that you enter in text boxes containing more than one line

Words are tested upon use of spaces or other delimiters.
Test words: xghi Google goggleplex spit splinter xdfe;

Once set up properly so that the spelling check works in a text area, you can have the built-in spelling checker check any webpage, by making the document editable with a bookmarklet
spellcheck: -- one of many bookmarklets available in my "K" folder, see Firefox Keyword Shortcuts look for k.html
  javascript:document.body.contentEditable='true'; %20document.designMode='on';%20void%200

(future) Firefox 4, if you want to have two different bookmarklets that do the same but have two different keywords in the future Firefox 4, you will need to modify the uri, such as adding or removing an %20 within a bookmarklet would work.  Firefox 4 will make all bookmarks with the same uri use the same keyword shortcut.  If the same keyword is acceptable there is no problem, be aware that the last one entered will prevail.  So following is one specifically for the bookmarks toolbar with a keyword that matches the visible bookmark "button".

Sp (Shortened to "Sp" for use in a copy directly on the Bookmarks Toolbar) -- see Bookmarks Toolbar Blue/Folders, Red/Bookmarks | userstyles.org
  javascript:document.body.contentEditable='true'; document.designMode='on';%20void%200

With the above examples, you have to add the keyword and a more complete name/title yourself to the bookmark properties.

Edit mode:
The "Spellcheck" or "Sp" macro will put you into edit mode.
If you don't see wavy lines under misspelled words, then bring up the main context menu, turn Spelling check off, then turn Spelling check back on while in edit mode, and you should see wavy lines under misspelled words.
From main context menu use "Add to Dictionary" if word is correct and should be in dictionary; if word is incorrect fix the word in the source with an editor such as Notepad.

Exiting edit mode:
While you are in Editing Mode from the bookmarklet, you will not be able to use browser features such as links.  F5 (Reset) will restore browser to normal usage.

Set-up of built-in Firefox spelling checker, if not working. (#spellcheck_jumpstart)

• Tools → Options → Advanced → General → "Check my spelling as I type" (default)
  (On a Mac use Firefox → Preferences → Advanced → ...)
• layout.spellcheckDefault set to 2 Enable spellchecker for multi-line controls and single-line controls (1 is default which only checks multi-line controls)
• spellchecker.dictionary, set to "en-US".  (should already be set, and as a default it might not be shown)
• Restart Firefox after changing layout.spellcheckDefault to 2.
• Check spelling, if does not identify misspelled words in the text area, or allow you to add a word when right clicking then take Firefox down, and create persdict.dat with Notepad (can be empty) in your profile directory, restart Firefox, and retest.  You can edit later using wordpad, or notepad++, but not with notepad, because there is one word per line which you will not see in notepad after Firefox has updated it.  Update after closing Firefox.

How to Tell if a Word should be hyphenated (of two words should be hyphenated:
Some directions on style in In-house style - MozillaZine KB, but nothing on hyphenation.

Some words in this article in one form or another that I have no idea whether right or wrong: drop-down, multi-line, mousewheel, over-widening, textarea, spellcheck, spellchecker, spelling checker, checkboxes. Possibly how used might make a difference or if in a title with words capitalized. Is there webpage where one can check. I tried Google Fight but it gave 0 results for both words tested in many cases (does that mean nobody ever searched for the words -- impossible). Okay, the rules were you are supposed to type two words into each box. Google search: How to tell if words should be hyphenated.

• Deleting spellcheck entries - MozillaZine Knowledge Base
• Dictionaries - MozillaZine Knowledge Base
• Extensions.spellcheck.inline.max-misspellings - MozillaZine Knowledge Base
• In-house style - MozillaZine Knowledge Base
• Spellchecker.dictionary - MozillaZine Knowledge Base

You can possibly find dictionaries by using the Microsoft button (file menu) in an application then under options, select proofing.

Also see Dictionaries - MozillaZine Knowledge Base

"After the Deadline - Spell and Grammar Checker" extension (86 KB), good to go after check-marking grammar rules wanted.  Invoked by "F4" default PFKey)

Use of the "SpellCheck" extension to check a web page (not forms) is from the Edit (menu).  "Spell Check" adds a toggle switch to the Tools menu.  Simpler to setup but may interfere with usage by advanced users with it's extra menus and overhead. (extension removed by Administrator at AMO)

ui.SpellCheckerUnderlineStyle possible fix for hard to see red wavy line:  0 None, 1 Dotted, 2 Long Dots, 3 Single Line, 4 Double Line, 5 Wavy Line(default).  Only double line shows up better, but only wavy line looks like an error so sticking with wavy line, which is even harder to notice under an unscored link. (Bug 338209 - Make spellchecker use thicker wavy underlines instead of dotted underlines., marked fixed but they are thin wavy lines not thick wavy lines). Also Bug 4386735.

Some custom dictionaries, can be edited in Word Pad with application down), or can be opened in Firefox and use spelling check to see if they show up as spelling errors. You may not want to add all words into an application. %20 is a space.

• C:\Users\*user*\AppData\Roaming\Microsoft\UProof\custom.dic
• C:\Users\*user*\AppData\Local\Microsoft\Windows%20Live%20Mail\Proof\lang0409.lex
• C:\Users\*user*\AppData\Roaming\Mozilla\Firefox\Profiles\*profilename*\persdict.dat

Images -- Test   (#images)

Linkify, Linkification of Plain Text Links -- Test   (#linkify)

Some examples:
example.com
www.example.com
http://www.example.com
dmcritchie.mvps.org/firefox/kws.htm

Tabbed Browsing in Firefox, lets you load multiple web pages into separate tabs within the same browser window.  While this is very powerful in itself and tabs are now in all browsers, there are additional benefits that become apparent when used with additional options in Firefox.

Lists Testing

checkout ordered/unordered lists: item 1 item 1.1 item 1.1.1 item 1.1.1.1 item 1.1.1.1.1 item 1.1.1.1.1.1 Retest:== item 1 item 1.1 item 1.1.1 item 1.1.1.1 item 1.1.1.1.1 item 1.1.1.1.1.1

Tab Testing   (#tabtesting)

Tab Density   (#tabdensity)

As far as density goes in 4.0b2 can only display 159 tabs at a time even with screen width set to 1369 (1369X738 widescreen)

Order of Tabs in Tabs Bar -- Tests   (#taborder),   [Skip to next topic]

• Tab Color Underscoring active/read/unread | userstyles.org (style 9023) -- But it is broken due to Bug 487242 -- Regression: in userChrome.css no longer possible to distinguish between unvisited tabs, visited tabs, and the selected tab (Please Vote to get fixed).
• Tabs Bar Minimal Size | userstyles.org (style 9043)

Firefox 3.6 (Namoroka) attempts to make use of tabs "easier" by placing opened tabs to the right of the tab from which they were opened and is experimenting with tabs as a group to the right or opening immediately to the right of the active tab.  In my opinion this makes a hopeless mess of tabs whichever way it is done, and makes use of tabs LIFO (Last In First Out) which is very counter productive.  You can test your 3.6 Beta or when released your 3.6 production version with the steps shown here.

You can skip the rest of this nonsense if you always want all new tabs to always open at the far right by using:
  browser.tabs.insertRelatedAfterCurrent   user set to False -- (Most highly recommended)

Future tests may also make use of these links:
  -- Top-level [A],  [B],  [C],  [D],  [E]   -- Actual intent is that these five should be opened from a folder all at once, such as frequently read blogs, tabs only opened in background.  Simulate opening from a folder by Opening A then in background B, C, D, E, click on E, then return to A and proceed with testing. An asterisk(*) indicates reselecting a tab.

Namoroka (3.6b3pre)
Creation:  *A B C D E *E *A 1 2 *B 3 4 *C 5 6 *D 7 8 *E 9 10 *1 21 22 23 *B 31 32 33
Results: A 1 21 22 23 2 B 31 32 33 3 4 C 5 6 D 7 8 E 9 10 (as expected)
Deleting from the right deletes tab and then activates tab to left.
10 9 E 8 7 D 6 5 C 4 3 33 32 31 B 2 23 22 21 1 A

Opening tabs in Foreground after opening A B C D E from folder or background
*A 1 *A 2 *B 3 *B 4 *C 5 *C 6 *D 7 *D 8 *E 9 *E 10
Results: A 2 1 B 4 3 C 6 5 D 8 7 E 10 9   (parity with Google Chrome)
Deleting from the right deletes tab then activates tab to left.
9 10 E 7 8 D 5 6 C 3 4 B 1 2

Google Chrome (3.0.195.32 & 3.0.195.33)
Creation: *A B C D E *E *A 1 2 *B 3 4 *C 5 6 *D 7 8 *E 9 10 *1 21 22 23 *B 31 32 33
Results: A B 3 4 31 32 33 C 5 6 D 7 8 E 9 10 1 21 22 23 2 (Google needs work)
Deleting tabs deletes tabs in a strange order.
2 1 21 22 23 10 9 8 7 D C 5 6 33 32 31 4 3 B, or deleting from
1 21 22 23 2 10 9 E 8 7 D 6 5 C 33 32 31 4 3 B

Opening tabs in Foreground after opening A B C D E from folder or background
*A 1 *A 2 *B 3 *B 4 *C 5 *C 6 *D 7 *D 8 *E 9 *E 10
Results: A 2 1 B 4 3 C 6 5 D 8 7 E 10 9 (Google and Firefox 3.6 in Foreground)
Deleting from the right deletes tab then activates tab to left.
9 10 E 7 8 D 5 6 C 3 4 B 1 2

Opera 10.01, Firefox 3.5.5, IE8 Opening tabs in Foreground or Background always places new tab to the far right like Firefox 3.5.5 and earlier.

IE8 (tabs to right like old Firefox):  Doesn't matter if Foreground or Background all go to the end of tabs, tabs bar will be scrolled right or left Ctrl+{1-9} pick from the visible tabs with Ctrl+9 showing the last visible tab. The rest can be picked from the drop-down.
order: A B C D E 01 02 03 04 05 06 07 08 09 10
note:  IE8 appears to have a serious Tab problem, slow, and can only show 10 tabs (because they are scrolled off).

Safari (tabs to right like old Firefox and IE defaults):  Doesn't matter if Foreground or Background all go to the end of tabs, but only the first 8-11 tabs are in order, the last tab to fit or selected from tabs drop-down past the first 8-11 to show in foreground will be the right-most tab.
order: A B C D E 01 02 03 04 05 06 07 08 09 10

Test opening of links from a bookmarks folder, often about twenty bookmarks, but will modify the tests to include the' original three (currently just showing the 01 for most tests) 01,  02,  03, 

Test opening of links in Background with your keyboard shortcut (ctrl+click (default), or Ctrl+Shift+click like Opera) 21, 22, 23, 24, 25, this would also be the same as if you opened the five links at once from a bookmarks folder (open all in tabs).

Test opening of links in Foreground with your keyboard shortcut (ctrl+shift+click (default), or Ctrl+click (Shift+click in Opera) 31, 32, 33, 34, 35,

Test opening of links that have target="_blank" 41, 42, 43, 44, 45,

Test opening of links like Google into same new tab target="_new" they will all be in the same heap with the newest at the top of the pile within one new tab. 51, 52, 53, 54, 55,
Fx2, 5 new tabs went to each;  Fx3 & Fx4, 1 new tab, only went to the 1st, stayed here for rest;

Firefox 3.5.4, Shiretoko 3.5.5pre (and Opera 10.01):  01, 02, 03, 21, 22, 23, 24, 25, 31, 32, 33, 34, 35, 41, 42, 43, 44, 45, 55,

Namoroka (3.6b2pre), and Minefield (3.7a1pre):  01, 55, 45, 44, 43, 42, 41, 35, 34, 33, 32, 21, 22, 23, 24, 25, 31, 02, 03, (with browser.tabs.insertRelatedAfterCurrent set to true by default).   Don't look here for updates on what these Beta versions are going to be doing, last I noticed it will be to emulate Google Chrome's topsy-turvy web browsing.  I am simply going to use the override and not waste another week on this ridiculousness, seems they are going to keep trying to resurrect all of their previous failed attempts.  The current thread on this can be seen in a Developer thread -- “Firefox 3.6 behavior when opening tabs”

IE8 (keyboard shortcuts same as Firefox defaults):  21, 22, 23, 24, 25, 31, 32, 33, 34, 35, (test ended with only 10 tabs open and disappearance of base page (01), tabs open VERY SLOWLY and with sound) just tested with 01 to start (not 01, 02, 03).

Google Chrome (Keyboard shortcuts same as Firefox/IE8 defaults):  01, 55, 45, 44, 43, 42, 41, 35, 34, 33, 32, 31, 21, 22, 23, 24, 25

Safari (keyed like Firefox/IE defaults):  01, 21, 22, 23, 24, 25, 31, 32, 33, 34, 35 (test ended with 41 going to a new window)

If you wanted an even more realistic test try opening 20 blogs, then try to read each blog in turn, and then read the tabs created from each of those tabs, and delete; half of the blogs and half of the inserted tabs when finished reading, anything but putting all new tabs to the far right is going to create a big mess.  When you delete a tab it goes back to the tab that created it if it came directly from there; otherwise, you go to the tab to the right.

You might also try open several pages in a tab, then backup to earlier page in tab and open more tabs.  Also try opening from a tab, then opening from another tab, then back to the first tab and open more tabs.

As you can see it will make a lot of difference whether you normally open tabs in the background or in the foreground.

Highlight, Find, text search tests (#highlight)

Firefox Find (builtin) provides "Highlight All" (toggle) on the Find bar, but does not provide for retaining that highlighting and adding additional highlighted words or phrases, nor does the "Find All" extension which adds to the builtin Find Bar.

Context Highlight (extension) lets you highlight multiple words and phrases based on selection and context menu with the Ctrl key. Test follows:

Group 1:  The Context Highlight extension lets you highlight all instances (multiple instances) of a string/word/phrase then color (yellow) directly from context menu "Highlight Words" (slow), or "Highlight phrase".  Must use Ctrl key when invoking context menu to mark additional words.. Reload (F5) clears.

Modified:  Modified with markup tags which may affect ability to mark multiple words and phrases. The Context Highlight extension lets you highlight all instances (multiple instances) of a string/word/phrase then color (yellow) directly from context menu "Highlight Words" (slow), or "Highlight phrase".  Must use Ctrl key when invoking context menu to mark additional words.. Reload (F5) clears.

Group 2:  The Context Highlight extension lets you highlight all instances (multiple instances) of a string/word/phrase then color (yellow) directly from context menu "Highlight Words" (slow), or "Highlight phrase".  Must use Ctrl key when invoking context menu to mark additional words.. Reload (F5) clears.

Mixed tagging within words or phrase:  David McRitchie, David McRitchie (uses &nbsp;), David McRitchie, David McRitchie, David McRitchie, David McRitchie, David McRitchie (two separate links), David McRitchie.

Mixed tagging within words or phrase:  Highlight word, words or highlight phrase.  Highlight, highlight, highlight, Highlight word, highlight phrase.

Checkboxes   (#checkboxes)

Send: link and description via email   (#send)

send: Send email link with Title & URL & Description (Share page), (w/o selection)

Like most of the bookmarklets I have, I created them from scratch, modified others, made later modifications to handle.

email: Email Title / URL / Selection (send:)

The "email" bookmarklet should include the description, will have to be integrated later on, it is messy task to be done later on. Selection cannot be incorporated on Android browsers such as Dolphin (AFAIK).

Also see Multiple Tab Handler description, and specific text notes, which can create lists with Title, url, description, but not selection within pages. MTH works on a single tab, all tabs, or a selection of tabs.

Sorting tables (#sorttable)

More Bookmarklets for Tables and Gridlines   (#moretables)

Flash Files   (#flashfiles)

• Plugin-container and out-of-process plugins - MozillaZine Knowledge Base, applies to Firefox 3.6.4 and above.
• Flash - MozillaZine Knowledge Base
• Chemspill Firefox 3.6.6 this weekend | Contributors | Forums | Firefox Support, should address the majority of cases where we see Flash hangs/crashes that weren't there before.

• Overview of Firefox 3 by Mike Beltzner (3min:50sec, 7.8 MB .swf file)
• tabs.swf by David McRitchie written as a companion for Tab Color Underscoring active/read/unread (Fx3.6) | userstyles.org, the file turned out to be very large at 6.7 MB (2min:40secs).  To do better will have to follow a script, was done with CamStudio - Free Screen Recording Software; quality:80, 3 frames/sec, highlight cursor.

• Check addons bar for a really long link ==> test#longlink
   Fx 3.6 link will go through the progress meter area without a problem
   Fx 4.0 link will go up to but not through the progress meter (this is a problem).
• Tooltip Demo [Mozilla Webdev » Blog Archive » Fun with Tooltips]
• Long Description (longdesc=) for images. Normal link
• You can test tabbing with the TAB key through toolbar text areas, tab in use, whole page, links and forms on this page, but if you also want to check a drop down try Free ZIP Code Maps ZIPCode Maps from Free-ZIPCode-Maps.com which has typical, address, town, state, zip input fields.