To ensure that the tutorials are accessible, I have made sure to add tooltips to my images. Tooltips appear when you hover your mouse over images on a browser.
I have some simple graphics in my onscreen tutorials and I had added alt tags to the images. I tested these using Firefox on the Mac, and Internet Explorer on Windows. For some reason the tooltips were not popping up in Firefox although they were working in IE. Also, I wanted tooltips to appear on certain links and they weren't working on IE.
I did a little bit of google searching and find the following:
- For years, I've been calling them "alt tags" and really they should be called alt "attributes".
- Firefox doesn't use alt attributes, it uses the title attribute and this works on both Firefox and IE
- Title attribute works for hyperlinks as well.