function popup(file, h, w){

	
		var winWidth = parseInt(w) + 20;
		var winHeight = parseInt(h) + 20;
		var pageInfo = file;	
	
	var scrolling = "scrollbars=no"
	
	var winLeft = (screen.width) ? (screen.width - winWidth)/2 : 0;
	var winTop = (screen.height) ? (screen.height - winHeight)/2 : 0;
	
	var winInfo = "toolbar=no,location=no,directories=no,menubar=noresize,height=" + winHeight + ",width=" + winWidth + ",top=" + winTop + ",left=" + winLeft + "," + scrolling;
	
	window.open(pageInfo, "W", winInfo);
}