function jchange(o) {
var fold_image = new Array();
fold_image[0] = "collapse.gif";
fold_image[1] = "expand.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];
   }
   }
  
 }

function kchange(o) {
var fold_image = new Array();
fold_image[0] = "collapse.gif";
fold_image[1] = "expand.gif";
if(document.getElementById(o).style.display=='none') {
document.getElementById(o).style.display='block';
 if(document.getElementById('mfolding')) {
document.getElementById('mfolding').src=fold_image[0];
  }
 } else {
document.getElementById(o).style.display='none';
   if(document.getElementById('mfolding')) {
document.getElementById('mfolding').src=fold_image[1];
   }
   }
  
 }

function lchange(o) {
var fold_image = new Array();
fold_image[0] = "collapse.gif";
fold_image[1] = "expand.gif";
if(document.getElementById(o).style.display=='none') {
document.getElementById(o).style.display='block';
 if(document.getElementById('lfolding')) {
document.getElementById('lfolding').src=fold_image[0];
  }
 } else {
document.getElementById(o).style.display='none';
   if(document.getElementById('lfolding')) {
document.getElementById('lfolding').src=fold_image[1];
   }
   }
  
 }

function mchange(o) {
var fold_image = new Array();
fold_image[0] = "collapse.gif";
fold_image[1] = "expand.gif";
if(document.getElementById(o).style.display=='none') {
document.getElementById(o).style.display='block';
 if(document.getElementById('kfolding')) {
document.getElementById('kfolding').src=fold_image[0];
  }
 } else {
document.getElementById(o).style.display='none';
   if(document.getElementById('kfolding')) {
document.getElementById('kfolding').src=fold_image[1];
   }
   }
  
 }