// JavaScript Document
function openCenteredWindow(theURL,winName,w,h,f) { 
	var l = (screen.width) ? (screen.width-w)/2 : 0;
	var t = (screen.height) ? (screen.height-h)/2 : 0;
	f += ',height='+h+',width='+w+',top='+t+',left='+l;
	window.open(theURL,winName,f);
}