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=400,height=300,scrollbars=yes');
	}
	return false;
}