Hovering ToolTips

The HTML 4.0 TITLE attribute causes a ToolTip to be displayed when the user hovers over an element:

<A HREF="./completesale.htm">
<IMG SRC="./gifs/productimage.gif" 
  TITLE="Click this image to purchase"></A>

Unlike the ALT attribute, which applies only to <AREA> and <IMG> tags, you can place a TITLE on any HTML element, such as over an anchor.