function popup(mylink, windowname, klein)
{
	if(!window.focus)
		return true;
	
	var href;
	if(typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;

	if(klein == 1)
		window.open(href, windowname, 'width=352,height=500,scrollbars=no');
	else
		window.open(href, windowname, 'width=660,height=500,scrollbars=no');
	return false;
}