function Toggle(item) 
{
   obj=document.getElementById(item);
   visible=(obj.style.display!="none")
   key=document.getElementById("x" + item);
   if (visible) 
   {
     obj.style.display="none";
     key.innerHTML="[+]";
   } 
   else 
   {
      obj.style.display="block";
      key.innerHTML="[-]";
   }
}

function Expand() 
{
   divs=document.getElementsByTagName("div");
   for (i=0;i<divs.length;i++) 
   {
     divs[i].style.display="block";
     key=document.getElementById("x" + divs[i].id);
     key.innerHTML="[-]";
   }
}

function Collapse() 
{
   divs=document.getElementsByTagName("div");
   for (i=0;i<divs.length;i++) 
   {
     divs[i].style.display="none";
     key=document.getElementById("x" + divs[i].id);
     key.innerHTML="[+]";
   }
}