function switchCvp(id)
{
  var e=document.getElementById(id);
  e.style.display = (e.style.display!= "none" ? "none" : ""); 
}

function switchAll()
{
  var e=document.getElementsByTagName("TBODY");
  for(var i=0;i<e.length;i++)
  {
    e[i].style.display = (e[i].style.display!= "none" ? "none" : ""); 
  }
  var e=document.getElementById(id);
}

function colapseAll()
{
  var e=document.getElementsByTagName("TBODY");
  for(var i=0;i<e.length;i++)
  {
    e[i].style.display = "none";
  }
}

function expandAll()
{
  var e=document.getElementsByTagName("TBODY");
  for(var i=0;i<e.length;i++)
  {
    e[i].style.display = "";
  }
}