On desktop computers, I can use the title attribute of the image element of the image as a tooltip. How can I handle this behavior on the iPad?
I'm not sure, but you can get a tooltip on an image using a jquery tooltip. Check here. http://code.drewwilson.com/entry/tiptip-jquery-plugin
You will need to work to get an idea of the image. This plugin is used to get tooltips for links. It also works great on the ipad for links. Try this, can help you.