function popup(url,width,height,scrollbars,popupname) 
{
        if (scrollbars) 
	{
                properties_str = "toolbar=no,width=" + width + ",height=" + height + ",directories=0,status=yes,scrollbars=1,resizable=1,menubar=0,location=0"
        } 
	else 
	{
                properties_str = "toolbar=no,width=" + width + ",height=" + height + ",directories=0,status=yes,scrollbars=0,resizable=1,menubar=0,location=0"
        }
        window.open(url,popupname,properties_str);
}