function wopen(url,x,y) {


	LeftPosition = (screen.width) ? (screen.width-y)/2 : 0;


	TopPosition = (screen.height) ? (screen.height-x)/2 : 0;


	fen=window.open (url, 'fen', 'location=no,toolbar=no,status=no, left=' + LeftPosition + ', top=' + TopPosition + ', menubar=no,scrollbars=no,resizable=no,width='+ y + ',height=' + x);

fen.focus();
}