var app1 = new Image();
        var app1_on = new Image();
        var app1_out = new Image();
        app1.src = "images/menu/1.gif"
        app1_on.src = "images/menu/stl_1.gif"
        app1_out.src = "images/menu/1.gif"
        var app2 = new Image();
        var app2_on = new Image();
        var app2_out = new Image();
        app2.src = "images/menu/2.gif"
        app2_on.src = "images/menu/stl_2.gif"
        app2_out.src = "images/menu/2.gif"

        var app3 = new Image();
        var app3_on = new Image();
        var app3_out = new Image();
        app3.src = "images/menu/3.gif"
        app3_on.src = "images/menu/stl_3.gif"
        app3_out.src = "images/menu/3.gif"

        var app4 = new Image();
        var app4_on = new Image();
        var app4_out = new Image();
        app4.src = "images/menu/4.gif"
        app4_on.src = "images/menu/stl_4.gif"
        app4_out.src = "images/menu/4.gif"

        var app5 = new Image();
        var app5_on = new Image();
        var app5_out = new Image();
        app5.src = "images/menu/5.gif"
        app5_on.src = "images/menu/stl_5.gif"
        app5_out.src = "images/menu/5.gif"

        var app6 = new Image();
        var app6_on = new Image();
        var app6_out = new Image();
        app6.src = "images/menu/6.gif"
        app6_on.src = "images/menu/stl_6.gif"
        app6_out.src = "images/menu/6.gif"

        var app7 = new Image();
        var app7_on = new Image();
        var app7_out = new Image();
        app7.src = "images/menu/7.gif"
        app7_on.src = "images/menu/stl_7.gif"
        app7_out.src = "images/menu/7.gif"

        var app8 = new Image();
        var app8_on = new Image();
        var app8_out = new Image();
        app8.src = "images/menu/8.gif"
        app8_on.src = "images/menu/stl_8.gif"
        app8_out.src = "images/menu/8.gif"

        var app9 = new Image();
        var app9_on = new Image();
        var app9_out = new Image();
        app9.src = "images/menu/9.gif"
        app9_on.src = "images/menu/stl_9.gif"
        app9_out.src = "images/menu/9.gif"

        var app10 = new Image();
        var app10_on = new Image();
        var app10_out = new Image();
        app10.src = "images/menu/10.gif"
        app10_on.src = "images/menu/stl_10.gif"
        app10_out.src = "images/menu/10.gif"

        var app11 = new Image();
        var app11_on = new Image();
        var app11_out = new Image();
        app11.src = "images/menu/11.gif"
        app11_on.src = "images/menu/stl_11.gif"
        app11_out.src = "images/menu/11.gif"

        var app12 = new Image();
        var app12_on = new Image();
        var app12_out = new Image();
        app12.src = "images/menu/12.gif"
        app12_on.src = "images/menu/stl_12.gif"
        app12_out.src = "images/menu/12.gif"
    
        function mouseOver(name)
    {
                  var newImage = eval("app" + name + "_on.src")
                  eval("document.app" + name + ".src = newImage")
        }

        //mouse out for top navigation
        function mouseOut(name)
        {
                  var newImage = eval("app" + name + "_out.src")
                  eval("document.app" + name + ".src = newImage")
        }