var highlight_item_selected = 0;
var num_highlight_items = 5;
function toggle_highlight(item_number) {
    var his = document.getElementById('highlight');
    his.id = 'faded_' + highlight_item_selected;
    
    var his_mark = document.getElementById('top_mark_'+highlight_item_selected);
    his_mark.style.backgroundColor = "transparent";
    
    if (item_number != undefined) {
        highlight_item_selected = item_number;
        if (top_intval) {
            clearInterval(top_intval);
            top_intval = setInterval("toggle_highlight()", 5000);
        }
    } else {
        if (highlight_item_selected == num_highlight_items-1) {
            highlight_item_selected = 0;
        } else {
            highlight_item_selected++;
        }
    }
    
    
    var his_image = document.getElementById('top_image');
    var new_image = document.getElementById(top_ids[highlight_item_selected]);
    his_image.innerHTML = "<a href='/index.php/news/show/id="+top_ids[highlight_item_selected]+"' class='plain'>" + new_image.innerHTML + "</a>";
    
    var his = document.getElementById('faded_'+highlight_item_selected);
    his.id = 'highlight';
    
    var his_mark = document.getElementById('top_mark_'+highlight_item_selected);
    his_mark.style.backgroundColor = "#3082a9";
    
    var his_title = document.getElementById('top_title');
    his_title.innerHTML = "<h1><a href='/index.php/news/show/id="+top_ids[highlight_item_selected]+"' class='plain'>"+top_titles[highlight_item_selected]+"</a></h1>";
    
}