This is a Mozilla-specific option, but it makes for some nice edges on interfaces and IE will roll to square edges without any problem:

.mybox {
    -moz-border-radius: 10px;
    border: 1px solid black;
    background: lightblue;
}

See this handy URL for some other tips and tricks:

http://www.eightlines.com/neil/mozskin/csscommands.html

To have the width of the column accomodate the longest value, double-click the separator to the right of the column label.

If you've made a typo on a URL and you're forever being reminded of it when FF tries to help you make matches against what you're typing, you can remove them. Just down-arrow through the list and press Shift+Delete on each entry you want to drop.

To view your cache, point your browser at about:cache.

Like you, I love Firefox for many reasons, including its popup blocking support. It turns out that some clever people figured out that you could launch popups from Flash, getting around the Firefox default settings.

Fortunately, you can get around it:

1. Type about:config into the Firefox location bar.
2. Right-click on the page and select New and then Integer.
3. Name it privacy.popups.disable_from_plugins
4. Set the value to 2.

The possible values are:

0: Allow all popups from plugins.
1: Allow popups, but limit them to dom.popup_maximum.
2: Block popups from plugins.
3: Block popups from plugins, even on whitelisted sites.

Note: Borrowed from http://www.petebevin.com. Read the original article.

You can use RSS feeds to create live bookmark menus in Firefox. Using the menus, go to Bookmarks -> Manage Bookmarks -> File -> New Live Bookmark. Enter RSS feed information. In your bookmarks menu you'll have a directory-like listing of the RSS information.

To add odd-even row coloring to a spreadsheet, highlight the block of rows that you want colored and enter a conditional formatting formula:

1. Select the cells you want to format.

2. Access the menu: Format > Conditional Formatting...

3. Change the condition dropdown to Formula is.

4. Click the Format... button and select the formatting you want.

5. Enter the appropriate formula below:

   =MOD(ROW()-Rw,N*2)+1<=N
   

   For example:

   =MOD(ROW()-2,1*2)+1<=1
   

Where Rw is the first row to be formatted and N is the number of rows for banding. If you want to alternate, set N to 1. For even banding, change the conditional to >N instead of <=N.

Use the commands enlarge-window-horizontally and shrink-window-horizontally to change the size of an emacs window.