function popup(windowname, mylink)
{
	if (!window.focus) return false;
	var href;
	if (typeof(mylink) == 'string')
	{
	   href = mylink;
	}
	else
	{
	   href = mylink.href;
	}
	window.open(href, windowname, 'width=400,height=450,resizable=yes,scrollbars=yes');
	return false;
}