var mediaPopUp = false;
function openPopUp(url){
	if(mediaPopUp){
		if(mediaPopUp.closed != true){
			mediaPopUp.location.href = url;
			mediaPopUp.focus();
			return;
		}
	}
	var options = 'scrollbars=no,toolbar=no,status=no,resizable=no,menubar=no,location=no,directories=no';
	var height = 492;
	var width = 620;
	var top = (screen.height-height)/2;
	var left= (screen.width-width)/2;
	mediaPopUp = window.open(url,"mediaPopUp","top="+top+",left="+left+",width="+width+",height="+height+","+options);
	mediaPopUp.focus();
	return;
}