/***** Dynamic Menu *****/

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';
            
            var itemCollection = target.getElementsByTagName('ul');
            var currentSubMenu = itemCollection[0];
			if(!currentSubMenu) return;
              
            currentSubMenuHeight = 0;
            currentSubMenuHeight = getElementHeight(currentSubMenu);
            currentPosY = findPosY(target);

            /*** use this section to determine if the submenu is too tall***/
            bottomPosition = getWindowHeight() - currentSubMenuHeight - currentPosY;
            
            if (bottomPosition < 0)
            {
                //Your sub menu reaches beyond the bottom of the visible page
               
              newYPosition = bottomPosition - 10 + 'px';
              currentSubMenu.style.top = newYPosition;
            }
            
            /*** use this section to determine if the submenu is too tall***/
           
           
        }
        
       
    },
    
    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){  //cross-browser event handling for IE5+, NS6+, and Mozilla/Gecko By Scott Andrew
	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);

function findPosX(obj)
  {
    var curleft = 0;
    if(obj.offsetParent)
        while(1) 
        {
          curleft += obj.offsetLeft;
          if(!obj.offsetParent)
            break;
          obj = obj.offsetParent;
        }
    else if(obj.x)
        curleft += obj.x;
    return curleft;
  }

  function findPosY(obj)
  {
    var curtop = 0;
    if(obj.offsetParent)
        while(1)
        {
          curtop += obj.offsetTop;
          if(!obj.offsetParent)
            break;
          obj = obj.offsetParent;
        }
    else if(obj.y)
        curtop += obj.y;
    return curtop;
  }
  
  function getWindowHeight()
  {
  var scr_h = screen.availHeight;
  var browseHeight;
  
   browseHeight=document.body.clientHeight;
   
   return browseHeight;
  }
  
  function getWindowWidth()
  {
  var scr_w = screen.availWidth;
  var browseWidth;

  if (document.layers){
     browseWidth=window.outerWidth;
   }
   if (document.all){
     browseWidth=document.body.clientWidth;
   }
   return browseWidth;
  }
 
 function getElementHeight(obj)
  {
    var currentHeight = 0;
        
    return obj.offsetHeight;
  }
/***** Dynamic Menu *****/