function popup(url,width,height,scrollbars)
	{
		if (arguments.length < 2)
		{
			width  = 400;
		}
		if (arguments.length < 3)
		{
			height = 359;
		}
		if (arguments.length < 4)
		{
			scrollbars = 'no';
		}
		window.open(url,"","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=" + scrollbars + ",resizable=yes,width=" + width + ",height=" + height)
	}