var ie = (document.all) ? 1:0;
var ns4 = (document.layers) ? 1:0;
var ns6 = (document.getElementById) ? 1:0;
var pop = false;

var layerLeftPos = 100;

function main_menu_out(id) {
  hide(id);
  if (ie) {
    if (document.all["submenu"+id]) {
      document.all["submenu"+id].style.visibility = "visible";
    }
  }
  else { 
    if (ns4) {
      if (document.layers["submenu"+id])
      document.layers["submenu"+id].visibility = "show";
    }
    else {
      if (document.getElementById("submenu"+id))
      document.getElementById("submenu"+id).style.visibility = "visible";
    }
  }
}
function main_menu(id) {
  if (ie) {
    if (document.all["submenu"+id] && !pop){
      document.all["submenu"+id].style.visibility = "hidden";
    }
  }
  else {
    if (ns4) {
      if (document.layers["submenu"+id] && !pop) {
        document.layers["submenu"+id].visibility = "hide";
      }
    }
    else {
      if (document.getElementById("submenu"+id) && !pop) {
        document.getElementById("submenu"+id).style.visibility = "hidden";
      }
    }
  }
}
function hide(id2){
  if(document.layers) {
    document.layers["submenu"+id2].visibility='hide';
  }
  else {
    document.all["submenu"+id2].style.visibility='hidden';
  }
}