function picture_popup_dom(sUrl, nWidth, nHeight) 
{
	nWidth++; 
	nWidth += 10;
	nHeight++; 
	nHeight += 10;
 
	var nLeft = (screen.width - nWidth) /2;
	var nTop = (screen.height - nHeight) /2;
 	
 	nWidth += 7; 
	nHeight += 7; 
 
	win = window.open(sUrl, 'win', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=' + nWidth + ',height=' + nHeight + ',left=' + nLeft + ',top=' + nTop);
 
	return;
}