function custom_window(URL, windowname, location, resizable, scrollbars, menubar, toolbar, status, directories, width, height, screenX, screenY, left, top)
	{
	parm_list = "location=" + location + ",resizable=" + resizable + ",scrollbars=" + scrollbars + ",menubar=" + menubar + ",toolbar=" + toolbar + ",status=" +	status + ",directories=" + directories + ",width=" + width + ",height=" + height + ",screenX=" + screenX + ",screenY=" + screenY + ",left=" + left + ",top=" + top;
	window.open(URL, windowname, parm_list);
	}