The following is an archive of comments made before threaded discussions was implemented (November 16th, 2008)

Is this the same thing as the Popup Alt Attribute extension?

@Kimball: Its the same like the "popup-alt"-extension:

This is an extension to popup alternate texts given as ALT attributes (they are not descriptions, but authors often use the attribute only for popups), like NC4, IE, and other browsers.

As an additional feature, this includes "multi-row tooltip". If the text is too long, it will be shown in multiline automatically.

Screenshot:
http://piro.sakura.ne.jp/xul/_img/popupalt.png

You need to improve your description. I have no idea what "popup alt" means.

Great idea. I made one change to identify the ALT tag when it's used instead of a pre-existing title:

if(alt && !title) tag[i].title = "ALT: " + alt;