function preloadCategories() {
    image1 = new Image();
    image1.src = "../images/category/baking_cooking_button_hover_new.gif";

    image2 = new Image();
    image2.src = "../images/category/natural_beauty_button_hover.gif";

    image3 = new Image();
    image3.src = "../images/category/drinks_button_hover_new.gif";

    image4 = new Image();
    image4.src = "../images/category/mother_and_baby_button_hover.gif";

    image5 = new Image();
    image5.src = "../images/category/superfoods_button_hover.gif";

    image6 = new Image();
    image6.src = "../images/category/grocery_button_hover_new.gif";

    image7 = new Image();
    image7.src = "../images/category/household_button_hover.gif";

    image8 = new Image();
    image8.src = "../images/category/chocolate_button_hover.gif";

    image9 = new Image();
    image9.src = "../images/category/your_healthy_living_show_button_hover.gif";

    image10 = new Image();
    image10.src = "../images/category/supplements_button_hover_new.gif";

    image11 = new Image();
    image11.src = "../images/category/fridge_freezer_button_hover.gif";

    image12 = new Image();
    image12.src = "../images/category/off_license_button_hover.gif";

    image13 = new Image();
    image13.src = "../images/category/body_haircare_button_hover.gif";
}