function toggle(image, section, open, close) {

      if(document.all) {
        if(document.all[section].style.display == "block") {
           document.all[section].style.display = "none";
           document.all[image].src = close;
        }
        else
        {
           document.all[section].style.display = "block";
           document.all[image].src = open;
        }
      }
      else
      {
      if(document.getElementById(section).style.display == "block") {
         document.getElementById(section).style.display = "none";
         document.getElementById(image).src = close;
         }
      else
         {
         document.getElementById(section).style.display = "block";
         document.getElementById(image).src = open;
         }
      }

   }

   function expandall(open) {

     var divNodeList = document.getElementsByTagName('div');
     for (i = 0; i < divNodeList.length; i++) {
        if(divNodeList[i].id) {
           divNodeList[i].style.display = "block";
           document.getElementById('trigger_' + divNodeList[i].id.substr(7)).src = open;
        }
     }

   }

   function collapseall(close) {

     var divNodeList = document.getElementsByTagName('div');
     for (i = 0; i < divNodeList.length; i++) {
        if(divNodeList[i].id) {
           divNodeList[i].style.display = "none";
           document.getElementById('trigger_' + divNodeList[i].id.substr(7)).src = close;
        }
     }

   }