I was able to get this to work on my own Q2A site.
I used a different tool-tip plugin.
Here is how i did it.
1. Place a link to Jquery script in your site's footer. I used it hosted at google ajax apis.
2. Place a link to the Jquery tools tool tip plug in in your site's footer. I downloaded a copy of just the tooltips. You can also link it directly from their site if you want the whole thing
http://flowplayer.org/tools/download/index.html
3. Add the following Javascript Code to your page...
<script type="text/javascript">
$(document).ready(function() {
//begin tooltips
$(".qa-main :input").tooltip({
position: "top center",
offset: [-8, 0],
effect: "toggle",
opacity: 1.0,
delay:0
}); //end tips
});
</script>
4. Add the following CSS to your site's css file or Q2A theme.
/* simple css-based tooltip */
.tooltip {
z-index:999999;
background-color:#cbffc9;
border:2px solid #225a20;
padding:7px 10px;
width:200px;
display:none;
color:#225a20;
text-align:left;
font-size:12px;
font-weight:bold;
-moz-box-shadow:0 0 5px #999;
-webkit-box-shadow:0 0 5px #999;
}
You can customize the css to get the tips to look however you want. And can play with the options of the tooltip plugin for effects, position etc.
Cheers
Frank