function createPopup(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='+scroll+',resizable'
    winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl;
    win = window.open(mypage, 'map', winprops)
    if (window.focus) {win.focus()}
    //if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}