var win=null;

function NewWindow(mypage,myname,w,h){
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings =
	'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars=no,resizable=no,titlebar=no,status=no';
	win = window.open(mypage,myname,settings);
return;
}