window.onerror=null;
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion.substring(0,4));

if((browserName=="Netscape" && browserVer >= 3) || (browserName=="Microsoft Internet Explorer" && browserVer >= 4)) ver = "yes";
else ver = "no";

if(ver == "yes") {
                a1 = new Image(); a1.src ="/gfx/menu/2a.gif";
        a2 = new Image(); a2.src ="/gfx/menu/2b.gif";
        
        b1 = new Image(); b1.src ="/gfx/menu/3a.gif";
        b2 = new Image(); b2.src ="/gfx/menu/3b.gif";
                
                c1 = new Image(); c1.src ="/gfx/menu/4a.gif";
                c2 = new Image(); c2.src ="/gfx/menu/4b.gif";
                
                d1 = new Image(); d1.src ="/gfx/menu/5a.gif";
                d2 = new Image(); d2.src ="/gfx/menu/5b.gif";

}

function active(imgName)
{
        if (ver == "yes")  {
                img1 = eval(imgName + "1.src");
                        document [imgName].src = img1;
        }
}



function inactive(imgName)
{
        if (ver == "yes")  {
                img2 = eval(imgName + "2.src");
                document [imgName].src = img2;
            }
}