var MainID = -1;
var host = document.location.host;
var page = document.location.href.substring(document.location.href.indexOf(host)+host.length);
page = page.toLowerCase();

function getMenuId(menuid) {
 return "cat_" + menuid;
}

function hardSetSelectedItem(menuid,pageurl) {
 menuid = getMenuId(menuid);
 pageurl = pageurl.toLowerCase();
 if (pageurl == page) return;
 var ie = 0;
 var detect = navigator.userAgent.toLowerCase();
 if (detect.indexOf('msie') > 0) ie = 1;
 var menus = document.getElementById(menuid);
 if (menus == null) return;
 var tds = menus.getElementsByTagName("td");
 setSelected(tds, pageurl, ie);
}

function getMenuItem(menuid) {
 menuid = getMenuId(menuid);
 var menus = document.getElementById(menuid);
 if (menus == null) return;
 var tds = menus.getElementsByTagName("td");
 for (var i = 0; i < tds.length; i++) {
  var mouseover = tds[i].onmouseover;
  if (mouseover == null) return i;
 }
 return -1;
}

function getMenu(menuid) {
 menuid = getMenuId(menuid);
 var menus = document.getElementById(menuid);
 if (menus == null) return false;
 var tds = menus.getElementsByTagName("td");
 for (var i = 0; i < tds.length; i++) {
  if (tds[i].getAttribute("onclick") != null) {
   itemurl = tds[i].getAttribute("onclick").toString();
   pos = itemurl.indexOf("=");
   if (pos != -1) {
    pos2 = itemurl.indexOf(';');
    itemurl = itemurl.substring(pos+2,pos2-1);
    if (itemurl.toLowerCase() == page.toLowerCase()) return true;
   }
  }
 }
 return false;
}

function getMainID() {
 if (getMenu("321310")) {
  hardSetSelectedItem("321303","/courses");
  MainID=3;
 }
}

function inner() {
 /*MainID=getMenuItem("321303");
 if (MainID != 3) getMainID();
 if (MainID == 3) {
  //document.getElementById("img1").src="/images/headers/our courses.jpg";
  document.getElementById("img2").src="/images/headers/our courses.gif";
  document.getElementById("submenu").style.display="block";
 } else {*/
  document.getElementById("inner-left").innerHTML="";
  document.getElementById("inner-left").style.width="45px";
  document.getElementById("inner-right").style.width="640px";
 //}
 //ShowAD();
}

function compare(arg1,arg2){
 return arg1[1]-arg2[1];
}

function ShowAD(){
 var N = 1;
 var RN = new Array();
 var AD = 1;
 var total = 0;
	
 for (i = 0; i < N; i++) RN[i] = [i,Math.random()];
 RN.sort(compare);
 for (i = 0; i < N; i++) {
  document.getElementById("adimg").src="/ad/"+RN[i][0]+".jpg";
  total++;
  if (total>=AD) break;
 }
}