if (document.images)
  {
    var but1a  = new Image(142,148); but1a.src  = "but1.gif";
    var but1b  = new Image(142,148); but1b.src  = "but1b.gif";
    var but2a  = new Image(142,148); but2a.src  = "but2a.gif";
    var but2b  = new Image(142,148); but2b.src  = "but2bb.gif";
    var but3a  = new Image(142,148); but3a.src  = "but3.gif";
    var but3b  = new Image(142,148); but3b.src  = "but3b.gif";
    var but4a  = new Image(142,148); but4a.src  = "but4.gif";
    var but4b  = new Image(142,148); but4b.src  = "but4b.gif";
  }

var NETS = ((navigator.appName.substring(0,8)=="Netscape") &&
            (navigator.appVersion.substring(0,1)>="3"));

var MSIE = ((navigator.appName.substring(0,8)=="Microsof") &&
            (navigator.appVersion.substring(0,1)>="4"));

var InArea = 0;







function chkVer (imagename,objectsrc)
  {
    if (MSIE || NETS) document.images [imagename].src = eval (objectsrc + ".src");

    InArea = (imagename == 'g02' && objectsrc == 'but2b');
  }







function Menu()
  {
    var Lft, Top, Wid, Hei, parms, path;

    // self.name = "Parent_Window";

    path = "choose.html";

    Wid = 190;

    Hei = 180;
    
    Lft = (screen.width - Wid) / 2;

    Top = (screen.height - Hei) / 2;

    parms = "width="+Wid+",height="+Hei+",left="+Lft+",top="+Top;

    window.open (path, "", parms);
  }








function gotopage (type)
  {
    var url, url1, url2;

    url1 = "demo/demo.html";

    url2 = "demo/media/index.html";

    url = (type ? url2 : url1);
    
    win = window.opener.top.location=url

    window.close();
  }