But there is other better solutions, and these of course are using CSS and some magic :)! the ideas is the same as doing menus with CSS.
Let's suppose we want tool tips for our links a on the page, the ideas is to add position:relative to the element you want to be tooltipe(ed) -a link in our case- so that we can allow the label inside our link to be positioned absolutely respect to the parent (the link).
this is the CSS :
a.tt{
position:relative; /*this is the key*/
z-index:24;
}
a.tt:hover{z-index:25;}
a.tt label{display: none}
a.tt:hover label{ /*the span will display just on :hover state*/
display:block;
position:absolute;
top:2em; left:2em; width:15em;
border:1px solid #0cf;
background-color:#cff; color:#000;
text-align: center}
you can see a live test by hovering around the subscription form above! (you may want to subscribe too :) )
original found here : http://psacake.com/web/jl.asp