function ShowHide(obj,obj1)
  {

	var e1 = document.getElementById(obj);
	var e2 = document.getElementById(obj1);
	if ( e1.style.display != 'none' ) {
	e1.style.display = 'none';
	e2.src="../images/expandcollapse2.gif";
	}
	else {
	e1.style.display = 'block';
	e2.src="../images/minus.gif";
	}
  }