// function NewWindow(mypage, myname, w, h)
//
// 
function NewWindow(mypage, myname, w, h) {
	var winl = (screen.width - w) / 2; 
	var wint = (screen.height - h) / 2;

	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=no,resizable=no';
	win = window.open(mypage, myname, winprops);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); } 
}