function TogglePlus( secid )
{
  var sectionId = document.getElementById(secid);
  if (sectionId == null) return;
  if (sectionId.style.display == '')
    {
      sectionId.style.display = 'none';
      var ImgSrc = document.getElementById("i" + secid);
      ImgSrc.src = "images/plus.gif";
    }
  else
    {
      sectionId.style.display = '';
      var ImgSrc = document.getElementById("i" + secid);
      ImgSrc.src = "images/minus.gif";
    }
}

function Toggle( secid )
{
  var sectionId = document.getElementById(secid);
  if (sectionId == null) return;
  if (sectionId.style.display == '')
    { sectionId.style.display = 'none'; }
  else
    { sectionId.style.display = ''; }
}

function Hide( obj )
{
  var element = document.getElementById(obj);
  if(element != null) element.style.display = "none";
}

function Show( obj )
{
  var element = document.getElementById(obj);
  if(element != null) element.style.display = "";
}

function changeall( obj, maxi, action )
{
  var iobj;
  var oDiv;
  var i;
  for (i=1; i < (maxi+1); i++)
    {
      iobj = obj+i;
      oDiv = document.getElementById(iobj);
      if (oDiv != null) oDiv.style.display = action;
    }
}