function PopUp(_u, _w, _h){
	_Win = window.open(_u, 'yton_popup','width='+_w+',height='+_h+',left=' + ((screen.width-_w)/2) + ',top=' + ((screen.height-_h)/2) + ',toolbar=no,location=no,status=no,scrollbars=yes,resizable=yes,menubar=no,dependent=yes');
	_Win.focus()	
}