var BrowserName = navigator.appName;
var BrowserVersion = navigator.appVersion;
var BVersion = BrowserVersion.substr(22,1);

if((BrowserName == "Microsoft Internet Explorer") && BVersion < 7){

	window.onscroll = function(){
		if(document.documentElement.scrollTop>139){
			var neutop = Window.getScrollTop()-149;
			$('js_stretch').setStyle('top', neutop+'px');
		}
		else if(document.documentElement.scrollTop == 0){
			$('js_stretch').setStyle('top', '0px');
		}
		
	}
}
else{

	window.onscroll = function(){
	if(document.documentElement.scrollTop>139){	
		document.getElementById("js_stretch").style.position="fixed";
		document.getElementById("js_stretch").style.paddingTop="0";	
		}else{
			document.getElementById("js_stretch").style.position="relative";
			document.getElementById("js_stretch").style.paddingTop="149px";	
		}
	}
	
}