function initVideoSearch() {
    // get and set default view and term
    var q = new Querystring();
    var searchTerm = q.get('q');
    if (searchTerm != null) {
        $('video_txt').value = searchTerm;
    }
    changeSearchType('video',$('video_link'));
}

function swapImage(element, newImage) {
    element.src = newImage;
}

function showCategories() {
    var el = $("categoryListContainer")
    el.style.display = "block";
}

function hideCategories() {
    var el = $("categoryListContainer")
    el.style.display = "none";
}

function highlightCategoryTitle(el) {
    el.style.border = "1px solid #cccccc";
}

function unhighlightCategoryTitle(el) {
    el.style.border = "1px solid white";
}

function toggleCategoryList(event) {
    
    var myElement = Event.element(event);
    var divElement = $('categoryListContainer');
    
    if (myElement.descendantOf('categoryListContainer')) {  
        (myElement.id == 'hypCloseCategories') ? hideCategories() : showCategories();
    }
    else {
        (myElement.id == 'imgArrow') ? showCategories() : hideCategories();
    }   
    
}