var cont_open=0;
function show_filter()
{
        if(cont_open==0)
        {
                document.getElementById('filter_cont_1').style.display="block";
                document.getElementById('open_fil').style.display="none";
                document.getElementById('close_fil').style.display="inline";
                cont_open=1;
        }
        else
        {
                document.getElementById('filter_cont_1').style.display="none";
                document.getElementById('close_fil').style.display="none";
                document.getElementById('open_fil').style.display="inline";
                cont_open=0;
        }
}

var jsvhover = function()
{
        var menuDiv = document.getElementById("top_menu");
        if (!menuDiv)
                return;

  var nodes = menuDiv.getElementsByTagName("td");
  for (var i=0; i<nodes.length; i++)
  {
    nodes[i].onmouseover = function()
    {
      this.className += " jsvhover";
    }

    nodes[i].onmouseout = function()
    {
      this.className = this.className.replace(new RegExp(" jsvhover\\b"), "");
    }
  }
}

if (window.attachEvent)
        window.attachEvent("onload", jsvhover);