var popup_window;

function OpenPopupWindow(file, title, width, height, scrollbars)

{

	var x = (screen.availWidth-width)/2;

	var y = (screen.availHeight-height)/2;


	popup_window = window.open(file,title,"width=" + width + ",height=" + height + ",left=" + x +",top=" + y + ",fullscreen=no,channelmode=no,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=" + scrollbars + ",resizable=no");

	popup_window.focus();

}