var IE = (navigator.appName == "Microsoft Internet Explorer") ? 1 : 0;
if (navigator.userAgent.indexOf("Opera") > 0) IE = 0;
var hideMenu1_0 = null
var hideMenu2_0 = null
var hideMenu2_1 = null
var hideMenu2_2 = null
var hideMenu3_0 = null
var hideMenu4_0 = null

function Show(Num, Num2) {
  var div1 = document.getElementById("m"+Num+"_0");
  var div = document.getElementById("m"+Num+"_"+Num2);
  var ifr1 = document.getElementById("i"+Num+"_0");
  var ifr = document.getElementById("i"+Num+"_"+Num2);

  if (Num != 1) Hide(1, 0);
  if (Num != 2) Hide(2, 0);
  if (Num != 3) Hide(3, 0);
  if (Num != 4) Hide(4, 0);
  if (!(Num == 2 && Num2 == 1)) Hide(2, 1);
  if (!(Num == 2 && Num2 == 2)) Hide(2, 2);

  eval('clearTimeout(hideMenu'+Num+'_0);');
  eval('clearTimeout(hideMenu'+Num+'_'+Num2+');');

  if (Num2 > 0) {
    div1.style.display = "";
    if (IE) {
      ifr1.style.display = "";
      ifr1.style.width = div1.offsetWidth;
      ifr1.style.height = div1.offsetHeight;
    } 
  }  
  div.style.display = "";
  if (IE) {
    ifr.style.display = "";
    ifr.style.width = div.offsetWidth;
    ifr.style.height = div.offsetHeight;
  }  

  if (Num2 == 0) document.images["p"+Num].src = "images/m" + Num + "a.gif";
}

function Hide(Num, Num2) {
  var div = document.getElementById("m"+Num+"_"+Num2);
  var ifr = document.getElementById("i"+Num+"_"+Num2);

  div.style.display = "none";
  ifr.style.display = "none";

  if (Num2 == 0) document.images["p"+Num].src = "images/m" + Num + ".gif";
}

function timeHide(Num, Num2) {
  eval('hideMenu'+Num+'_'+Num2+'= setTimeout("Hide('+Num+', '+Num2+')", 300)');
}