/* This is a small script to hide the "up" arrow when users upvote
 * posts and comments. The only reason for this is to give some feedback
 * to the user after clicks.
 */

function vote (action, dom_element) {
    var arrow_up     = dom_element.children[0];
    var vote_counter = dom_element.children[1];
    var arrow_down   = dom_element.children[2];
    
    // Voted/Upvoted
    var current_status = 0;
    
    if ("upvoted" == arrow_up.className)
        current_status = 1;
    
    if ("downvoted" == arrow_down.className)
        current_status = -1;
    
    // Current vote
    var current_vote = Number (vote_counter.textContent);
    
    // Remove class from arrows
    arrow_up.className = "";
    arrow_down.className = "";
    
    // Toggle upvote class for arrow
    if ("up" == action)
        switch (current_status)
        {
            case -1:
                vote_counter.textContent = current_vote + 2;
                arrow_up.className = "upvoted";
                break;
            case 0:
                vote_counter.textContent = current_vote + 1;
                arrow_up.className = "upvoted";
                break;
            case 1:
                vote_counter.textContent = current_vote - 1;
                break;
        }
    
    // Toggle downvote class for arrow
    if ("down" == action)
        switch (current_status)
        {
            case -1:
                vote_counter.textContent = current_vote + 1;
                break;
            case 0:
                vote_counter.textContent = current_vote - 1;
                arrow_down.className = "downvoted";
                break;
            case 1:
                vote_counter.textContent = current_vote - 2;
                arrow_down.className = "downvoted";
                break;
        }
}