<input type="radio" name="1" value="1" alt="4">
Printable View
<input type="radio" name="1" value="1" alt="4">
Maybe the INPUT tag doesn't support ALT like IMG, A, and others do.
Alt is only for images, i think. Try the title attribute (IE only).
Remember that the TITLE text will only appear when you hover over the actual button, not the title to it.
thnks a lot guys :)