function setOverflow()
{
var browser=navigator.appName;
var b_version=navigator.appVersion;
var version=parseFloat(b_version);
var className = 'scroll_ie';
if (browser!="Microsoft Internet Explorer")
{
className = 'scroll_ff';
}

document.body.style.overflow = 'hidden';

var div = document.getElementById('content_scroller');
div.className = className;
}