var menuLayers = {
  timer: null,
  activeMenuID: null,
  offX: -10,   // horizontal offset 
  offY: 11,  // vertical offset 
  show: function(id, e) {
    var mnu = document.getElementById? document.getElementById(id): null;
    if (!mnu) return;
    this.activeMenuID = id;
    if ( mnu.onmouseout == null ) mnu.onmouseout = this.mouseoutCheck;
    if ( mnu.onmouseover == null ) mnu.onmouseover = this.clearTimer;
    window.viewport.getAll();
    this.position(mnu,e);
  },
  
  hide: function() {
    this.clearTimer();
    if (this.activeMenuID && document.getElementById) 
      this.timer = setTimeout("document.getElementById('"+menuLayers.activeMenuID+"').style.visibility = 'hidden'", 200);
  },
  
  position: function(mnu, e) {
    var x, y;
    e = e? e: window.event;

    if ( e.clientX + mnu.offsetWidth + this.offX > viewport.width )
      x = e.clientX - mnu.offsetWidth - this.offX + viewport.scrollX;
    else x = e.clientX + viewport.scrollX + this.offX;
  
    if ( e.clientY + mnu.offsetHeight + this.offY > viewport.height )
      y = viewport.height + viewport.scrollY - mnu.offsetHeight;
    else y = e.clientY + viewport.scrollY + this.offY;
    
    mnu.style.left = x + "px"; mnu.style.top = y + "px";
    this.timer = setTimeout("document.getElementById('" + menuLayers.activeMenuID + "').style.visibility = 'visible'", 200);
  },
  
  mouseoutCheck: function(e) {
    e = e? e: window.event;
    // is element moused into contained by menu? or is it menu (ul or li or a to menu div)?
    var mnu = document.getElementById(menuLayers.activeMenuID);
    var toEl = e.relatedTarget? e.relatedTarget: e.toElement;
    if ( mnu != toEl && !menuLayers.contained(toEl, mnu) ) menuLayers.hide();
  },
  
  // returns true of oNode is contained by oCont (container)
  contained: function(oNode, oCont) {
    if (!oNode) return; // in case alt-tab away while hovering (prevent error)
    while ( oNode.parentNode ) {
      oNode = oNode.parentNode;
      if ( oNode == oCont ) return true;
    }
    return false;
  },

  clearTimer: function() {
    if (menuLayers.timer) clearTimeout(menuLayers.timer);
  }
  
}
function MM_goToURL() { //v3.0
  var i, args=MM_goToURL.arguments; document.MM_returnValue = false;
  for (i=0; i<(args.length-1); i+=2) eval(args[i]+".location='"+args[i+1]+"'");
}