function popUp() {
    var URL = "VideoPopUp.aspx";
    var w = 501;
    var h = 282;
    
	day = new Date();
	id = day.getTime();
	leftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	topPosition = (screen.height) ? (screen.height-h)/2 : 0;
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,statusbar=no,resizable=no,width=" + w + ",height=" + h +",left=" + leftPosition + ",top=" + topPosition + "');");
}