var mmOpenContainer = null;
var mmOpenMenus = null;
var mmHideMenuTimer = null;

function MM_menuStartTimeout(hideTimeout) {
  mmHideMenuTimer = setTimeout("MM_menuHideMenus()", hideTimeout);
}

function MM_menuHideMenus() {
  MM_menuResetTimeout();
  if(mmOpenContainer) {
    var c = document.getElementById(mmOpenContainer);
    c.style.visibility = "inherit";
    mmOpenContainer = null;
  }
  if( mmOpenMenus ) {
    for(var i in mmOpenMenus) {
      var m = document.getElementById(mmOpenMenus[i]);
      m.style.visibility = "hidden";
    }
    mmOpenMenus = null;
  }
}

function MM_menuHideSubmenus(menuName) {
  if( mmOpenMenus ) {
    var h = false;
    var c = 0;
    for(var i in mmOpenMenus) {
      if( h ) {
        var m = document.getElementById(mmOpenMenus[i]);
        m.style.visibility = "hidden";
      } else if( mmOpenMenus[i] == menuName ) {
        h = true;
      } else {
        c++;
      }
    }
    mmOpenMenus.length = c+1;
  }
}

function MM_menuOverMenuItem(menuName, subMenuSuffix) {
  MM_menuResetTimeout();
  MM_menuHideSubmenus(menuName);
  if( subMenuSuffix ) {
    var subMenuName = "" + menuName + "_" + subMenuSuffix;
    MM_menuShowSubMenu(subMenuName);
  }
}

function MM_menuShowSubMenu(subMenuName) {
  MM_menuResetTimeout();
  var e = document.getElementById(subMenuName);
  e.style.visibility = "inherit";
  if( !mmOpenMenus ) {
    mmOpenMenus = new Array;
  }
  mmOpenMenus[mmOpenMenus.length] = "" + subMenuName;
}

function MM_menuResetTimeout() {
  if (mmHideMenuTimer) clearTimeout(mmHideMenuTimer);
  mmHideMenuTimer = null;
}

function MM_menuShowMenu(containName, menuName, xOffset, yOffset, triggerName) {
  MM_menuHideMenus();
  MM_menuResetTimeout();
  MM_menuShowMenuContainer(containName, xOffset, yOffset, triggerName);
  MM_menuShowSubMenu(menuName);
}

function MM_menuShowMenuContainer(containName, x, y, triggerName) {
  var c = document.getElementById(containName);
  var s = c.style;
  s.visibility = "inherit";

  mmOpenContainer = "" + containName;
}