function OnMainSubCategoryToggle(category, action) {

    var imgCategory = document.getElementById("img_" + category);

    if (action == 0) {
        imgCategory.src = "images/mainsubcategories/iwc_" + category + "_off.jpg";
    }
    else {
        imgCategory.src = "images/mainsubcategories/iwc_" + category + "_on.jpg";
    }
}