function openIT(u,W,H, sc) {
		var x = (screen.width - W) / 2;
		var y = (screen.height - H) / 2;
		//window.moveBy(left, top);
		window.open(u, '',"width="+W+",height="+H+",scrollbars="+(sc ? "yes" : "no")+", left="+x+",top="+y);
}