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It seems that IE has spoiled me. I used to rely on the ALT attribute of the image tag to provide tooltips for images. I found out this evening that this doesn't work in Firefox. If you mouseover the images below you'll see that the tooltip only works in IE with the image on the left. If you mouseover the image on the right you'll get the tooltip in both IE and Firefox. It turns out the trick is to implement the title="" attribute of the image tag.
For more information on these attributes click here.
Posted by dennis baldwin at December 8, 2005 09:02 PM