var ie = (document.all) ? true : false;
function xacollapse(id) 
{ 
      var ccommid = document.getElementById(id); 
      if(ccommid !== null) {
        if(ccommid.style.display == 'block') {
        ccommid.style.display = 'none';
        }
      else { 
        hideClass('tohide');
        ccommid.style.display = 'block';
        }
      }
}

function hideClass(objClass){
//  This function will hide Elements by object Class
//  Works with IE and Mozilla based browsers

var elements = (ie) ? document.all : document.getElementsByTagName('*');
  for (i=0; i<elements.length; i++){
    if (elements[i].className==objClass){
      elements[i].style.display="none"
    }
  }
}