// showhide.js


   function exp_coll(ind)
   {
      s = document.getElementById("sp_" + ind);
      if (s.style.display == 'none')
      {
        s.style.display = 'block';
      }
        else if (s.style.display == 'block')
             {
               s.style.display = 'none';
             }
   }

  
  function imgOn (img) {
  var curimg = 'arrow'+img;
  //var imgsrc = document.eval(curimg).src;
  var imgsrc  = 'document.'+curimg+'.src';
  var imgname = 'document.'+curimg;
  if (eval(imgsrc).indexOf("uarrow") > 0) {
    eval(imgname).src =  "/images/darrow.gif";
  }else{
    eval(imgname).src =  "/images/uarrow.gif";
    //document.eval(curimg).src =  "/images/uarrow.gif";
  }
  exp_coll(img);
}

// end of showhide.js