var previd;   

function topover(pageId){
  var oUpPrev =document.getElementById(previd);
  var oUp =document.getElementById(pageId);
  var oMember =document.getElementsByName(previd);
  var oMemberLink =document.getElementsByName(pageId);

  if (previd != null )oUpPrev.className="top";
  oUp.className="top_hover"; // 
  if(navigator.appName.indexOf('Microsoft')!=-1) x=1;
  else x=0; 
  for(i=x;i<oMember.length;i++)oMember[i].style.display="none";
  for(i=x;i<oMemberLink.length;i++)oMemberLink[i].style.display="inline";
  previd=pageId; //update yang lagi active
}

function selectedMenu(parentId,pageId){
  var oMemberLink;
  var oSelected =document.getElementById(pageId);
  if (oSelected.className=="top"){
    oMemberLink =document.getElementsByName(pageId); 
    previd=pageId;
  }
  else{
    oMemberLink =document.getElementsByName(parentId);
    oSelected =document.getElementById(parentId);
    previd=parentId;
  }

  oSelected.className="top_hover";
  if(navigator.appName.indexOf('Microsoft')!=-1) x=1;
  else x=0; 
  for(i=x;i<oMemberLink.length;i++)oMemberLink[i].style.display="inline";
}


function right(e) {
var msg = "Sorry, you don't have permission to right-click images.";
if (navigator.appName == 'Netscape' && e.which == 3) {
alert(msg);
return false;
}
if (navigator.appName == 'Microsoft Internet Explorer' && event.button==2) {
alert(msg);
return false;
}
else return true;
}

function trap() 
  {
  if(document.images)
    {
    for(i=0;i<document.images.length;i++)
      {
      document.images[i].onmousedown = right;
      document.images[i].onmouseup = right;
      }
    }
  }