Killer Bookmarklets I have Come Across
Toggle Table Borders v.1: TogTable
ToggleCSS v.1: TogCSS
Toggle Table Borders v.2: TogTable -- new and improved, submitted by Reid
To use these, just drag them to your bookmarks file. I can't take credit for these, but I can never find where I found them, so I put copies here. Send me a note if you know from whence they came.
Note: Don't Tip Me For These, I Didn't Write Them! - Joe Crawford