var AccordionMenu =(function(){
  var YUD = YAHOO.util.Dom;
  var YUE = YAHOO.util.Event;
  var oMenuSetting = {};
  var oMenuCache = {};
  var dLastHoverTitle ;
  YUD.addClass(document.documentElement,'accordion-menu-js');
  
  function getDT(e)
  {
    var dEl = YUE.getTarget(e);
    
    if(	(e.tagName + '').toUpperCase()=='DD' )
    {	
      var dt = e.previousSibling ;
      while(dt)
      {
	if(dt.tagName &&  dt.tagName.toUpperCase() == 'DT'){break;};
	dt = dt.previousSibling
      };
      
      if(!dt || dt.tagName.toUpperCase() != 'DT'){return;}
      else{return (dt.tagName==='DT')?dt:null};
    }
    else if(e.clientX)
    {
      var found = false;
      while( dEl.parentNode)
      {
	if(YUD.hasClass(dEl,'a-m-t')){ found  = true ; break;};
	dEl = dEl.parentNode;
      };
      if(!found){return null}
      else{return (dEl.tagName==='DT')?dEl:null };	
    };		
  };
  
  
  
  function getDD(dt)
  {
    if(!dt){return null;};
    var dd = dt.nextSibling ;
    
    while(dd)
    {	
      if(dd.tagName && dd.tagName.toUpperCase() == 'DD'){break;};
      dd = dd.nextSibling;
      
    };
    if(!dd || dd.tagName.toUpperCase() != 'DD'){return;}
    else{return dd};
  };
  
  function expand(dl,dt,dd)
  {
    dl.hasAnimation +=1;
    YUD.addClass(dd,'a-m-d-before-expand');		
    var oAttr = {height:{from:0,to:dd.offsetHeight }};
    
    YUD.removeClass(dd,'a-m-d-before-expand');
    
    var onComplete = function()
    {	
      oAnim.onComplete.unsubscribe(onComplete);
      oAnim.stop();
      YUD.removeClass(dd,'a-m-d-anim');
      YUD.addClass(dd,'a-m-d-expand');
      onComplete = null;	
      dl.hasAnimation -=1;
      var dt = getDT(dd);	
      YUD.addClass(dt,'a-m-t-expand');
      if( oMenuCache[ dl.id ] &&  oMenuCache[ dl.id ].onOpen && dd.style.height!='' )
      {	
	oMenuCache[ dl.id ].onOpen(	 {dl:dl,dt:dt,dd:dd} );								
      };	
      dd.style.height = '';
      
    };
    
    var onTween = function()
    {
      if(dd.style.height)
      {	
	YUD.addClass(dd,'a-m-d-anim');				
	oAnim.onTween.unsubscribe(onTween);
	onTween = null;
	dd.oAnim = null;
      };
      
    };
    
    if(dd.oAnim)
    {
      dd.oAnim.stop();
      dd.oAnim = null;
      dl.hasAnimation -=1;	
    };
    var oEaseType = YAHOO.util.Easing.easeOut;
    var seconds = 0.1;
    if(oMenuCache[ dl.id ] )
    {
      oEaseType = oMenuCache[ dl.id ]['easeOut']?oEaseType:YAHOO.util.Easing.easeIn;
      seconds =  oMenuCache[ dl.id ]['seconds'];
      
      if( !oMenuCache[ dl.id ]['animation'] )
      {
	var oAnim = {onComplete:{unsubscribe:function(){}},stop:function(){}};
	onComplete();
	return;
      };
    };
    
    
    var oAnim = new YAHOO.util.Anim(dd,oAttr,seconds ,oEaseType);
    oAnim.onComplete.subscribe(onComplete);	
    oAnim.onTween.subscribe(onTween);
    oAnim.animate();
    dd.oAnim = oAnim ;
    
  };
  
  function collapse(dl,dt,dd)
  {
    dl.hasAnimation +=1;
    YUD.addClass(dd,'a-m-d-anim');
    var oAttr = {height:{from:dd.offsetHeight,to:0}};
    
    
    var onComplete = function()
    {
      oAnim.onComplete.unsubscribe(onComplete);
      YUD.removeClass(dd,'a-m-d-anim');
      YUD.removeClass(dd,'a-m-d-expand');
      dd.style.height = '';
      dd.oAnim = null;
      onComplete = null;	
      dl.hasAnimation -=1;	
      var dt = getDT(dd);	
      YUD.removeClass(dt,'a-m-t-expand');	
      if( oMenuCache[ dl.id ] &&  oMenuCache[ dl.id ].onOpen )
      {				
	oMenuCache[ dl.id ].onClose(	 {dl:dl,dt:dt,dd:dd} );
      };			
      
    };
    
    if(dd.oAnim)
    {
      dd.oAnim.stop();
      dd.oAnim = null;
      dl.hasAnimation -=1;	
    };
    
    var oEaseType = YAHOO.util.Easing.easeOut;
    var seconds = 0.1;
    if(oMenuCache[ dl.id ] )
    {
      oEaseType = oMenuCache[ dl.id ]['easeOut']?oEaseType:YAHOO.util.Easing.easeIn;
      seconds =  oMenuCache[ dl.id ]['seconds'];
      if( !oMenuCache[ dl.id ]['animation'] )
      {
	var oAnim = {onComplete:{unsubscribe:function(){}},stop:function(){}};
	onComplete();
	return;
      };	
    };
    
    var oAnim = new YAHOO.util.Anim(dd,oAttr,seconds ,oEaseType);	
    oAnim.onComplete.subscribe(onComplete);	
    oAnim.animate();
    dd.oAnim = oAnim ;
  };
  
  function collapseAll(dl,dt,dd)
  {
    var aOtherDD = YUD.getElementsByClassName('a-m-d-expand','dd',dl);
    for(var i=0;i<aOtherDD.length;i++)
    {
      var otherDD = aOtherDD[i] ;
      if( otherDD !=dd )
      {
	collapse(dl,null,otherDD);
      };				
    };
  }
  
  
  var onMenuMouseover = function(e)
  {
    var dMenuTitle = getDT(e);
    if(!dMenuTitle){return;};
    if(dLastHoverTitle)
    {
      YUD.removeClass(dLastHoverTitle,'a-m-t-hover');
    };		
    YUD.addClass(dMenuTitle,'a-m-t-hover');
    dLastHoverTitle = dMenuTitle ;
    YUE.preventDefault(e);
    return false;		
  };
  
  var onMenuMouseout = function(e)
  {
    var dMenuTitle = getDT(e);
    if(!dMenuTitle){return;};
    if(dLastHoverTitle && dLastHoverTitle!=dMenuTitle)
    {
      YUD.removeClass(dLastHoverTitle,'a-m-t-hover');
      YUD.removeClass(dLastHoverTitle,'a-m-t-down');
    };	
    YUD.removeClass(dMenuTitle,'a-m-t-down');	
    YUD.removeClass(dMenuTitle,'a-m-t-hover');
    dLastHoverTitle = null ;
    YUE.preventDefault(e);
    return false;		
  };
  
  var onMenuMousedown = function(e)
  {
    var dMenuTitle = getDT(e);
    if(!dMenuTitle){return;};	
    YUD.addClass(dMenuTitle,'a-m-t-down');
    YUE.preventDefault(e);
    return false;	
  };
  
  var onMenuClick = function(e)
  {
    var dt = getDT(e);
    if(!dt){return;};
    var dd = getDD(dt);
    
    
    
    if(!dd){return;};
    var dl = dt.parentNode;
    
    if(dl.hasAnimation==null)
    {
      dl.hasAnimation = 0;
    }	
    if(dl.hasAnimation > 0 ){return;};
    YUD.removeClass(dt,'a-m-t-down');
    
    if(YUD.hasClass(dd,'a-m-d-expand'))
    {	
      collapse(dl,dt,dd);
    }
    else
    {			
      if( oMenuCache[ dl.id ] &&  oMenuCache[ dl.id ].dependent == false ){}
      else{collapseAll(dl,dt,dd);}
      expand(dl,dt,dd);
    };		
    YUE.preventDefault(e);
    return false;
  };
  
  
  YUE.on( document,'mouseover',onMenuMouseover);
  YUE.on( document,'mouseout',onMenuMouseout);
  YUE.on( document,'mousedown',onMenuMousedown);
  YUE.on( document,'click',onMenuClick);
  
  var oApi = {
    
    openDtById : function(sId)
    {
      var dt = document.getElementById(sId);
      if(!dt){return;};
      if(!YUD.hasClass(dt,'a-m-t')){return;};
      var dl = dt.parentNode;
      var dd = getDD(dt);
      if(dl.hasAnimation==null){dl.hasAnimation = 0;};
      
      if(dl.hasAnimation > 0 ){return;};
      if(YUD.hasClass(dd,'a-m-d-expand')){return;};
      if( oMenuCache[ dl.id ] &&  oMenuCache[ dl.id ].dependent == false ){}
      else{collapseAll(dl,dt,dd);}
      expand(dl,dt,dd);
    },
    
    closeDtById : function(sId)
    {
      var dt = document.getElementById(sId);
      if(!dt){return;};
      if(!YUD.hasClass(dt,'a-m-t')){return;};
      var dl = dt.parentNode;
      var dd = getDD(dt);
      if(dl.hasAnimation==null){dl.hasAnimation = 0;};
      if(dl.hasAnimation > 0 ){return;};
      if(!YUD.hasClass(dd,'a-m-d-expand')){return;};
      collapse(dl,dt,dd);
    },
    
    
    setting : function(id,oOptions)
    {	
      if( !oOptions ){return;};
      
      if( typeof(id)!='string' ){return;};
      
      var setMunu = function(dl)
      {	
	dl = dl || this;
	dl.hasAnimation = 0;
	oMenuCache[ dl.id ] = 
	  {
	    element:dl,
	    dependent:true,
	    onOpen:function(){},
	    onClose:function(){},
	    seconds:0.5,
	    easeOut:true,
	    openedIds:[],
	    animation:true
	  };
	oMenu =  oMenuCache[ dl.id ] ;
	
	if(typeof(oOptions['animation'])=='boolean')
	{
	  oMenu['animation'] = !!oOptions['animation']; 
	  
	};
	
	
	if(typeof(oOptions['dependent'])=='boolean')
	{
	  oMenu['dependent'] = !!oOptions['dependent']; 
	};
	
	if(typeof(oOptions['easeOut'])=='boolean')
	{
	  oMenu['easeOut'] = !!oOptions['easeOut']; 
	};
	
	if(typeof(oOptions['seconds'])=='number')
	{
	  oMenu['seconds'] = Math.max(0 , oOptions['seconds'] ); 
	};
	
	if(typeof(oOptions['onOpen'])=='function')
	{
	  oMenu['onOpen'] = oOptions['onOpen'];
	};
	
	if(typeof(oOptions['onClose'])=='function')
	{
	  oMenu['onClose'] = oOptions['onClose'];
	};
	
	if(oOptions['openedIds'].shift)
	{
	  oMenu['openedIds'] = oOptions['openedIds'];
	};
	
	
	for(var i=0;i<oMenu['openedIds'].length;i++)
	{
	  var sId = oMenu['openedIds'][i];
	  var dt = document.getElementById( sId  );
	  
	  if(dt && dt.tagName.toUpperCase() == 'DT')
	  {
	    var dl = dt.parentNode;
	    var dd = getDD(dt);
	    expand(dl,dt,dd);
	  }
	  else if(!dt)
	  {
	    function onDtAvailable()
	    {
	      var dt = this;
	      if(dt.tagName.toUpperCase() == 'DT')
	      {
		var dl = dt.parentNode;
		var dd = getDD(dt);
		expand(dl,dt,dd);
	      };	
	    };
	    
	    YUE.onAvailable(sId,onDtAvailable);
	  }			
	};
	
	
      };
      
      if(document.getElementById(id))
      {
	setMunu(document.getElementById(id))
      }
      else
      {	
	YUE.onAvailable(id,setMunu);	
      };	
    }
  };//endof api
  
  return oApi;
  
})();