var exp = exp || null, expTO = null;
function ShowExp() {
  if (exp == null) exp = document.getElementById("exp");
  window.clearTimeout(expTO);
  var links = document.getElementById("exp_link");
  
  links.style.backgroundPosition = "-433px -26px";
  links.style.zIndex = "7";
  
  exp.style.left = links.offsetLeft + "px";
  exp.style.display = "inline";
};

function HideExp() {
  if (exp == null) exp = document.getElementById("exp");
  expTO = window.setTimeout(function() {
    var links = document.getElementById("exp_link");
    
    links.style.backgroundPosition = "-433px 0px";
    links.style.zIndex = "5";
    exp.style.display = "none"; }, 100
  );
};