/* LinkList expander */ 
function expander(s,id,clname) { 
   var o = document.getElementById(id); 
   var n = o.firstChild; 
    
   while (n) { 
      if (n.className == clname) { 
         if (n.style.display == "none") { 
            n.style.display = "block"; 
            s.title = "Collapse"; 
            s.innerHTML = "[-]"; 
         } 
         else { 
            n.style.display = "none"; 
            s.title = "Expand"; 
            s.innerHTML = "[+]"; 
         } 
      } 
      n = n.nextSibling; 
   } 
}