[jQuery] Error in IE - Error: 'url' is null or not an object

[jQuery] Error in IE - Error: 'url' is null or not an object


Site - http://www.scentsy.com/heather101
Location of js and css -
http://heather101.com/jcarousel/skins/tango/skin.css
http://heather101.com/jcarousel/scentsy/scentsy.js
http://heather101.com/jcarousel/skins/ie7/skin.css
The jCarousel works great in all other browsers, but in IE, when you
get to the end of the jCarousel it gives the "Error: 'url' is null or
not an object" pop up and it won't let me use the left arrow buttons
to go back.
Any help is much appreciated.