var oldcontent="OLD CONTENT";

function altercontent(content)
{
  if (document.all) 
  {
    oldcontent=hm_eventinfo.innerHTML;
    if(content!='') hm_eventinfo.innerHTML=content;
  }
  else if (document.getElementById)
  {
    rng = document.createRange();
    el = document.getElementById("hm_eventinfo");
    oldcontent=el.innerHTML;
    if(content!='') 
    {
      rng.setStartBefore(el);
      htmlFrag = rng.createContextualFragment(content);
      while (el.hasChildNodes()) el.removeChild(el.lastChild);
      el.appendChild(htmlFrag);
    }
  }
}


function restorecontent()
{
  if (document.all) 
  {
    hm_eventinfo.innerHTML=oldcontent;
  }
  else if (document.getElementById)
  {
    rng = document.createRange();
    el = document.getElementById("hm_eventinfo");
    rng.setStartBefore(el);
    htmlFrag = rng.createContextualFragment(oldcontent);
    while (el.hasChildNodes()) el.removeChild(el.lastChild);
    el.appendChild(htmlFrag);
  }
}