function __(id) {return document.getElementById(id);}

function displayMenu3(id) {   
  if (__('current_menu_3').value != 0) {
    var cur_menu2 = "menu_2_" + __('current_menu_3').value + "_active";
    var cur_menu2_i = "menu_2_" + __('current_menu_3').value + "_inactive";
    var cur_menu = "menu_3_" + __('current_menu_3').value;

    __(cur_menu).style.display='none';
  
  __(cur_menu2).style.display='none';
  __(cur_menu2_i).style.display='';
  }
  if (parseInt(__('current_menu_3').value) < 1) {
    if (__('empty_3')) {
      __('empty_3').style.display = 'none';
    }
  }
  
  var menu2 = "menu_2_" + id + "_active";
  var menu2_i = "menu_2_" + id + "_inactive";
  var menu = "menu_3_" + id;
  
  __(menu2).style.display='';
  __(menu2_i).style.display='none';
  
  if (__(menu)) {
    __(menu).style.display='';
    __('current_menu_3').value = id;
  }
}

function getPosition() {
  var scrollPosition = 0;
  if (window.pageYOffset) {
    scrollPosition = window.pageYOffset;    
  } else if (document.documentElement.scrollTop) {
    scrollPosition = document.documentElement.scrollTop;  
  } else {
    scrollPosition = document.body.scrollTop;
  }
  return scrollPosition;
}
function saveScroll() {
  document.cookie = "scp" + "=" + getPosition() + "; path=/";
}
function resetScrollPosition(Y) {
  if (Y != 0) {
    window.scrollTo(0, Y);
  }
}
function showHideImg(oid) {
  var obj = document.getElementById(oid);
  if( obj.style.display == 'none' )
    obj.style.display = 'block';
  else
    obj.style.display = 'none';
}
function HideImg(oid) {
  __(oid).style.display = 'none';
}