// Returns the version of Internet Explorer or a -1
function getInternetExplorerVersion(){
	var rv = -1; // Return value assumes failure.
	if (navigator.appName == 'Microsoft Internet Explorer'){
		var ua = navigator.userAgent;
		var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
		if (re.exec(ua) != null)
		rv = parseFloat( RegExp.$1 );
	}
	return rv;
}
function init(){
	var ie_ver = getInternetExplorerVersion();
	if(ie_ver == -1){ changeStyle('main'); }
	else { changeStyle('ie6'); }
}
function changeStyle(title) {
	var lnks = document.getElementsByTagName('link');
	for (var i = lnks.length - 1; i >= 0; i--) {
		if (lnks[i].getAttribute('rel').indexOf('style')> -1 && lnks[i].getAttribute('title')) {
			lnks[i].disabled = true;
			if (lnks[i].getAttribute('title') == title) lnks[i].disabled = false;
		}
	}
} 
window.onload = init;