function NewPage(mypage, w, h) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+true+',resizable'
win = window.open(mypage,"pop up", winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}