<!--

function show_home_menu() {
   document.getElementById('index_menu').style['visibility'] = 'visible';
}
function show_right_menu() {
   document.getElementById('right_menu').style['visibility'] = 'visible';
}
function show_left_menu(menu_index,browser) {
   if (browser == 'IE')
      document.getElementById('menu_left_about').style['display'] = 'inline';
   else
      document.getElementById('menu_left_about').style['display'] = 'table-row';
   /*if (menu_index > 1) {
      document.getElementById('menu_left_wheel').style['top'] = (menu_index * 32 + 122) + 'px';
   }*/
}
function change_home_picture(prefix, total) {
   var active = Math.floor(Math.random()*(total+0.99));
   visible_unique(prefix, active, total);
}
function visible_unique(prefix, active, total) {
   for (i = 1; i <= total; i++) {
      document.getElementById(prefix + i).style['visibility'] = 'hidden';
   }
   document.getElementById(prefix + active).style['visibility'] = 'visible';
}

function show_unique(prefix, active, total) {
   for (i = 1; i <= total; i++) {
      document.getElementById(prefix + i).style['display'] = 'none';
   }
   document.getElementById(prefix + active).style['display'] = 'block';
}
function class_unique(prefix, active, total, class_normal, class_selected) {
   for (i = 1; i <= total; i++) {
      document.getElementById(prefix + i).className = class_normal;
   }
   document.getElementById(prefix + active).className = class_selected;
}

function searchForm(tagId,max) {
   for (i = 1; i <= max; i++) {
      document.getElementById("tag"+i).className = "tag";
      document.getElementById("form"+i).className = "";
   }
   document.getElementById("tag"+tagId).className = "tag tag_selected";
   document.getElementById("form"+tagId).className = "form_selected";
}

function showAreaMenuOption(id, classname) {
   document.getElementById(id).className = classname;
}

-->