function NavMenu(form)
  {
  if (form.menu.options[form.menu.selectedIndex].value > "") 
    { 
    window.location.href = form.menu.options[form.menu.selectedIndex].value;
    }
  return true;
  }

function getURL(v)
  {
  var tmp
  tmp = "listquery.asp?listing=" + v
  document.location.href = tmp
  return true
  }

function isWin()
  {
  if (navigator.appVersion.indexOf("Win") == -1)
    {
    return false
    }
  return true
  }

function isNetscape()
  {
  if (navigator.appName == "Netscape")
    {
    return true
    }
  return false
  }

function isMac()
  {
  if (navigator.appVersion.indexOf("Macintosh") == -1)
   {
   return false
   }
  return true
  }

function getAppName()
  {
  if(isNetscape())
    {
    return true
    }
  else
    {
    return false
    }
  }