var dbMenu = {
  init: function()
    {
    var uls = document.getElementsByTagName('ul');
    for(var i = 0; i < uls.length; i++)
      {
      if(uls[i].className.search(/\bdbMenu\b/) == -1)
      continue;
      var menu = uls[i];
      dbMenu.styleSubMenus(menu);
      addEvent(menu, 'mouseover', dbMenu.hover, false);
      addEvent(menu, 'mouseout', dbMenu.hoverOff, false);
      if(menu.className.search(/\bonMouse\b/) == -1)
        {
        addEvent(menu, 'click', dbMenu.click, false);
        }
      addEvent(menu, 'click', dbMenu.nav, false);
      }    
    },
  hover: function(e)
    {
    var target = (window.event)? window.event.srcElement : (e)? e.target : null;
    if(target)
      {
      target = dbMenu.getTarget(target, 'li');
      if(!target) return;
      }
    else
      {
      return;
      }
    target.className += ' hover';
    var t = (target.className.search(/\bsubMenu\b/) != -1)? target : (target.parentSubMenu)? target.parentSubMenu : null;
    if(!t) return;
    clearTimeout(t.timeout);
    if(target.parentMenu.className.search(/\bonMouse\b/) != -1)
      {
      t.className += ' click';
      }
    },
  hoverOff: function(e)
    {
    var target = (window.event)? window.event.srcElement : (e)? e.target : null;
    if(target)
      {
      target = dbMenu.getTarget(target, 'li');
      if(!target) return;
      }
    else
      {
      return;
      }
    target.className = target.className.replace(/hover/g, '');
    if(target.parentMenu.className.search(/\bonMouse\b/) != -1)
      {
      var t = (target.className.search(/\bsubMenu\b/) != -1)? target : (target.parentSubMenu)? target.parentSubMenu: null;
      if(!t) return; 
      t.timeout = setTimeout(function(){ t.className = t.className.replace(/click/g, ''); }, 30);
      }
    },
  click: function(e)
    {
    if(window.event)
      {
      window.event.cancelBubble = true;
      }
    if(e && e.stopPropagation)
      {
      e.stopPropagation();
      }
    var target = (window.event)? window.event.srcElement : (e)? e.target : null;
    if(target)
      {
      target = dbMenu.getTarget(target, 'li');
      if(!target) return;
      }
    else
      {
      return;
      }
    if(target.className.search(/\bclick\b/) == -1)
      {
      target.className += ' click';
      }
    else
      {
      target.className = target.className.replace(/click/g, '');
      }
    },
  nav: function(e)
    {
    if(window.event)
      {
      window.event.cancelBubble = true;
      }
    if(e && e.stopPropagation)
      {
      e.stopPropagation();
      }
    var target = (window.event)? window.event.srcElement : (e)? e.target : null;
    if(target)
      {
      target = dbMenu.getTarget(target, 'li');
      if(!target) return;
      }
    else
      {
      return;
      }
    for(var i = 0; i < target.childNodes.length; i++)
      {
      var node = target.childNodes[i];
      if(node.nodeName.toLowerCase() == 'a')
        {
        window.location = node.href;
        break;
        }
      }
    },
  getTarget: function(target, elm)
    {
    if(target.nodeName.toLowerCase() != elm && target.nodeName.toLowerCase() != 'body')
      {
      return dbMenu.getTarget(target.parentNode, elm);
      }
    else if(target.nodeName.toLowerCase() == 'body')
      {
      return null;
      }
    else
      {
      return target;
      }
    },
  styleSubMenus: function(menu)
    {
    lis = menu.getElementsByTagName('li');
    for(var i = 0; i < lis.length; i++)
      {
      node = lis[i];
      node.parentMenu = menu;
      if(node.getElementsByTagName('ul').length != 0)
        {
        node.className += ' subMenu';
        sublis = node.getElementsByTagName('li');
        for(var j = 0; j < sublis.length; j++)
          {
          sublis[j].parentSubMenu = node;
          }
        }
      }
    }
  }
    
function addEvent(elm, evType, fn, useCapture)
  {
	if(elm.addEventListener)
	  {
		elm.addEventListener(evType, fn, useCapture);
		return true;
	  }
	else if(elm.attachEvent)
	  {
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	  }
	else
	  {
		elm['on' + evType] = fn;
	  }
  }

addEvent(window, 'load', dbMenu.init, false);