function popup(url, width, height, desc){
	if (desc)	{
		height += 50;
		width += 20;
	} 
	else { 
		height+=20;
		width += 20;		
	};
	
	ret = window.open(url, '', 'top=0, left=0, height=' + height + ', width=' + width + ', toobar=no, menubar=no, directories=no, status=no, scrollbars=no, resize=no'); 
};