compatibleBrowser = testBrowserVersion() ;

if (compatibleBrowser) {

      ButtonOn1 = new Image(40, 25);
      ButtonOn1.src = "images/nav-OurBuilding-02.gif";
      ButtonOff1 = new Image(40, 25);
      ButtonOff1.src = "images/nav-OurBuilding-01.gif";
      
      ButtonOn2 = new Image(40, 25);
      ButtonOn2.src = "images/nav-FloorPlans-02.gif";
      ButtonOff2 = new Image(40, 25);
      ButtonOff2.src = "images/nav-FloorPlans-01.gif";
      
      ButtonOn3 = new Image(40, 25);
      ButtonOn3.src = "images/nav-LeasingInfo-02.gif";
      ButtonOff3 = new Image(40, 25);
      ButtonOff3.src = "images/nav-LeasingInfo-01.gif";
      
      ButtonOn4 = new Image(40, 25);
      ButtonOn4.src = "images/nav-ExistingResidents-02.gif";
      ButtonOff4 = new Image(40, 25);
      ButtonOff4.src = "images/nav-ExistingResidents-01.gif";    
	  
      ButtonOn5 = new Image(40, 25);
      ButtonOn5.src = "images/nav-ContactUs-02.gif";
      ButtonOff5 = new Image(40, 25);
      ButtonOff5.src = "images/nav-ContactUs-01.gif";
      
           
}

function testBrowserVersion() {
        if (navigator.appVersion.substring(0, 2) == 2.0){
                return false;
        }
        else {
                appVerionNum = navigator.appVersion.substring(0, 3)
                if ((navigator.appName == "Netscape") && (appVerionNum >= 3.0)) {
                        return true ;
                } else if(appVerionNum >= 4.0) {
                        return true ;
                } else {
                        return false ;
                }
        }
}


function replaceImage(what, where) {
        if (compatibleBrowser) {
                imgWhat = eval(what + ".src");
                document.images[where].src = imgWhat;
        }
}