var actualmenu = "";

function hideactivemenu()
  {
  var layer = actualmenu;
  if (layer != "")
    {
    document.getElementById(layer).style.display="none";
    }
  }
var timeout;


function showMenu(layer, visible, over)
  {
  if (visible)
    actualmenu = layer;
  window.clearTimeout(timeout);
  if (visible)
    {
    document.getElementById(layer).style.display="block";
    }
  else
    {
    document.getElementById(layer).style.display="none";
    }
  //window.status = over;
  if (over == 0)
    timeout = window.setTimeout("hideactivemenu()", 1000);
  }