I have this error in IE. How would I fix it? I've looked into the js file refrenced...this is what is on line 78:

trailobj.style.width=(zoomimgwidth+(2*padding))+"px";

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2)
Timestamp: Thu, 6 Jan 2011 02:31:09 UTC


Message: 'padding' is undefined
Line: 78
Char: 3
Code: 0
URI: http://www.luxury7star.com/shop/incl..._imagehover.js


Message: 'padding' is undefined
Line: 78
Char: 3
Code: 0
URI: http://www.luxury7star.com/shop/incl..._imagehover.js


Message: 'padding' is undefined
Line: 78
Char: 3
Code: 0
URI: http://www.luxury7star.com/shop/incl..._imagehover.js


Message: 'padding' is undefined
Line: 78
Char: 3
Code: 0
URI: http://www.luxury7star.com/shop/incl..._imagehover.js

Thank you.