function popup(url) {
 	params  = 'width=600';
 	params += ', height=400';
	params += ', scrollbars=yes';
 	//params += ', top=0, left=0'
 	//params += ', fullscreen=yes';

 	newwin=window.open(url,'popup', params);
	if (window.focus) {newwin.focus()}
 	//return false;
}