function clickExpandCollapse(mydivId)
{
  if(document.getElementById(mydivId+"_3").style.display == 'none')
  {
	  document.getElementById(mydivId+"_1").src = "images/bg/minus.gif";
	  document.getElementById(mydivId+"_3").style.display = "block";
  }
  else
  {
	  document.getElementById(mydivId+"_1").src = "images/bg/plus.gif";
	  document.getElementById(mydivId+"_3").style.display = "none";
  }
}