Jquery Tool tip help

I am using tooltip plug in on a site and when I use it on a blank template, it works then when I transfer it to the page I want to use it on it does not work.

The site is

Here is they javascript code:

this.imagePreview = function(){
/* CONFIG */

xOffset = 10;
yOffset = 30;

// these 2 variable determine popup's distance from the cursor
// you might want to adjust to get the right result

/* END CONFIG */
$("a.preview").hover(function(e){
this.t = this.title;
this.title = "";
var c = (this.t != "") ? "<br/>" + this.t : "";
$("body").append("<p id='preview'><img src='../"+ this.href +"' alt='Image preview' />"+ c +"</p>");
$("#preview")
.css("top",(e.pageY - xOffset) + "px")
.css("left",(e.pageX + yOffset) + "px")
.fadeIn("fast");
},
function(){
this.title = this.t;
$("#preview").remove();
});
$("a.preview").mousemove(function(e){
$("#preview")
.css("top",(e.pageY - xOffset) + "px")
.css("left",(e.pageX + yOffset) + "px");
});
};


// starting the script on page load
$(document).ready(function(){
imagePreview();
});

Here is the HTML code.

<ul>
<li><a href="mailto:rragon@cumberland.k12.il.us">Mr. Russell Ragon</a>&nbsp;<a href="../../Images/staffbios/rragon.gif" class="preview"><img src="1s.jpg" alt="BIO" /></a></li>
</ul>


Here is the CSS code:

#preview{
position:absolute;
border:1px solid #ccc;
padding:5px;
display:none;
color:#fff;
background-color: #333;
}



This is my first post on this forum so I hope the code is clear you can check out the site up above just hover over one of the names. I am only getting image preview instead of the image I want. Ont thing I did do was I took out the image so I could get the Alternate code.

My objective here is to have a name and when you hover over it an image pops up and on the image will be a biography of the teacher.

Thanks for any help.