function preloadPortfolioImages(){
   
   
    var image0 = new Image();
    image0.src = "Images/arrow_trans.gif";
    var image1 = new Image();
    image1.src = "Images/arrow_left_default.gif";
    var image2 = new Image();
    image2.src = "Images/arrow_left_disabled.gif";
    var image3 = new Image();
    image3.src = "Images/arrow_left_hover.gif";
    var image4 = new Image();
    image4.src = "Images/arrow_right_default.gif";
    var image5 = new Image();
    image5.src = "Images/arrow_right_disabled.gif";
    var image6 = new Image();
    image6.src = "Images/arrow_right_hover.gif";

    var image8 = new Image();
    image8.src = "Images/ball_trans.gif";
    var image9 = new Image();
    image9.src = "Images/ball_current.gif";
    var image10 = new Image();
    image10.src = "Images/ball_default.gif";
    var image11 = new Image();
    image11.src = "Images/ball_hover.gif";
    
}