function OpenWindow(url, w, h, sc)
{
	var l = parseInt((screen.width - w)/2);
	var t = parseInt((screen.height - h)/2);
	var n = parseInt(Math.random() * 1000);
	if (sc)
	{
		var nw = window.open(url, "NewWindow" + n, "width=" + w + "px,height=" + h + "px,left=" + l + "px,top=" + t + "px,scrollbars=yes");
	} else {
		var nw = window.open(url, "NewWindow" + n, "width=" + w + "px,height=" + h + "px,left=" + l + "px,top=" + t + "px,scrollbars=no");
	}
	
	return nw;
}