function popup(mylink, windowname)
	{
		if (! window.focus)return true;
			var href;
		if (typeof(mylink) == 'string')
   			href=mylink;
		else
   			href=mylink.href;
			window.open(href, windowname, 'width=500,height=500,scrollbars=yes');
		return false;
	}