function centerElement(element){
	if (parseInt(navigator.appVersion)>3) {
		if (navigator.appName=="Netscape") {
			var scrolledLeft = window.pageXOffset;
			var scrolledTop = window.pageYOffset;
			if (scrolledLeft <= 0) {
				if (window.innerWidth < 760) {
					var leftPos = (((window.innerWidth/2)-16)-200);
				}
				else{
					var leftPos = (((window.innerWidth/2)-16)-300);
				}
				var topPos = (((window.innerHeight/2)-16)-210) + scrolledTop; 
			}
			else{
				if (window.innerWidth < 760) {
					var leftPos = (((window.innerWidth/2)-16)-200) + scrolledLeft; 
				}
				else{
					var leftPos = (((window.innerWidth/2)-16)-300) + scrolledLeft;
				}
				var topPos = (((window.innerHeight/2)-16)-210) + scrolledTop;
			}
		}
		if (navigator.appName.indexOf("Microsoft")!=-1) {
			var iebody=(document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body;
			var scrolledLeft = document.all? iebody.scrollLeft : pageXOffset;
			var scrolledTop = document.all? iebody.scrollTop : pageYOffset;
			 if (scrolledLeft <= 0) {
				if (iebody.clientWidth < 760) {
					var leftPos = (((iebody.clientWidth/2)-20)-190);
				}
				else{
					var leftPos = (((iebody.clientWidth/2)-20)-280);
				}
				var topPos = (((iebody.clientHeight/2)-20)-210) + scrolledTop;
			}
			else{	
				if (iebody.clientWidth < 760) {
					var leftPos = (((iebody.clientWidth/2)-20)-190) + scrolledLeft;
				}
				else{
					var leftPos = (((iebody.clientWidth/2)-20)-280) + scrolledLeft;
				}
				var topPos = (((iebody.clientHeight/2)-20)-210) + scrolledTop;
			}
		}
	}
	document.getElementById(element).style.left = leftPos + "px";	
	document.getElementById(element).style.top = topPos + "px";
	document.getElementById(element).style.display = "block";
}