the jquery UI demo "slider side scroll" is not working in IE7

the jquery UI demo "slider side scroll" is not working in IE7


try the following in IE7
http://jqueryui.com/demos/slider/side-scroll.html
in the code of the example
var leftVal = parseInt(scrollContent.css('margin-left'));
somehow the scrollContent.css is becoming string 'auto'
so when you parseInt, it becomes NaN