// JavaScript Document

function jchange(o) {
var fold_image = new Array();
fold_image[0] = "/images/openarrow.gif";
fold_image[1] = "/images/closedarrow.gif";

if(document.getElementById(o).style.display=='none') {
document.getElementById(o).style.display='block';
 if(document.getElementById('nfolding')) {
document.getElementById('nfolding').src=fold_image[0];
  }
 } else {
document.getElementById(o).style.display='none';
   if(document.getElementById('nfolding')) {
document.getElementById('nfolding').src=fold_image[1];
   }
   }
 
 }