function changePageVert(pCurrent, pNew) {
  $('#pages_vert_' + pCurrent).attr('class', 'pages_vert_0');
  $('#pages_vert_' + pNew).attr('class', 'pages_vert_1');
  $('#project_image').attr('src', tProjectImages[pNew]);
  $('#project_image_url').attr('href', tProjectImagesUrl[pNew]);

  current_page = pNew;
}










function menuTop(pElement, pState) {

  if (pState == 1) {
    $('#menu_item_' + pElement).removeClass('item_0');
    $('#menu_item_' + pElement).addClass('item_1');
  } else {
    $('#menu_item_' + pElement).removeClass('item_1');
    $('#menu_item_' + pElement).addClass('item_0');
  }
}