window.unload = unLoad();


    function preLoad() { 

    img1     = new Image(); 
    img1.src = "img/ico/i00_A_0.gif"
    img4     = new Image(); 
    img4.src = "img/ico/i00_A_1.gif"

    img2     = new Image(); 
    img2.src = "img/ico/i00_L_0.gif"
    img5     = new Image(); 
    img5.src = "img/ico/i00_L_1.gif"

    img3     = new Image(); 
    img3.src = "img/ico/i00_R_0.gif"
    img6     = new Image(); 
    img6.src = "img/ico/i00_R_1.gif"
    img9     = new Image(); 
    img9.src = "img/ico/i00_R_2.gif"

    }

    function unLoad() { 
    //alert(history.length);
    }