function preloadimages()
{
if (document.images) {
  pic1= new Image(275,15); 
  pic1.src="top_log_but_a.gif";
  pic2= new Image(20,20); 
  pic2.src="loader.gif";  
}
}


<!-- open close
function fixLinks()
{
  if (!document.getElementsByTagName) return null;
  var server = document.location.hostname;
  var anchors = document.getElementsByTagName("a");
  for(var i=0; i < anchors.length; i++)
  {
    var a = anchors[i];
    var href = a.href;
    var id = a.id;
    var title = a.title;
    if ((href.indexOf("*") != -1) && (href.indexOf("header") == -1)) { // jump ref
      var index = href.indexOf("*") + 1;
      href = "javascript:open_close('" + href.substring(index) + "');";
      a.setAttribute("href",href);
    }
  }
}


function hideDivs(exempt)
{
  if (!document.getElementsByTagName) return null;
  if (!exempt) exempt = "";
  var divs = document.getElementsByTagName("div");
  for(var i=0; i < divs.length; i++)
  {
    var div = divs[i];
    var id = div.id;
    if ((id == "user_form"))
    {
      div.style.display = "none";
    }
     if ((id == "main_navigation"))
    {
      div.style.display = "none";
    }
  }
}


function open_close(what)
{
  if (!document.getElementById) return null;
  showWhat = document.getElementById(what);
  if (wstatus == 1) {
  showWhat.style.display = "block";
  wstatus = 0;
  } else {
  showWhat.style.display = "none";
  wstatus = 1;
  }  
}



function close(what)
{
  if (!document.getElementById) return null;
  showWhat = document.getElementById(what);
  showWhat.style.display = "none";
}

window.onload = function()
{
  wstatus = 1;
  fixLinks();
hideDivs();

  preloadimages();
}

//-->