function update(){
	LeftPosition=(screen.width)?(screen.width-537)/2:0;
	TopPosition=(screen.height)?(screen.height-395)/2:0;
	window.open('../functions/updateing/start.php','null','width=537,height=395,location=0,status=1,scrollbars=0,resizable=1,top='+TopPosition+',left='+LeftPosition);

}