function OpenNewWindow(mypage, myname, w, h ) {
	var winl = (screen.width - w) / 2.2;
	var wint = (screen.height - h) / 1.8;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=yes';
	
	win = window.open(mypage, myname, winprops);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}