function openWin(page){
	w = 500;
	h = 480;
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=1,resizable=0,location=0,status=1,menubar=0,toolbar=1'
	win = window.open(page, "", winprops);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}