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 = .2;
        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');
            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} );
            };

        };

        var onTween = function()
        {
            if(dd.style.height)
            {
                YUD.removeClass(dd,'a-m-d-anim'); // Getting around IE6/7 bugs
                YUD.addClass(dd,'a-m-d-anim');
                oAnim.onTween.unsubscribe(onTween);
                onTween = null;
            };
        };

        if(dd.oAnim)
        {
            dd.oAnim.stop();
            dd.oAnim = null;
            dl.hasAnimation -=1;
        };

        var oEaseType = YAHOO.util.Easing.easeOut;
        var seconds = .2;
        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;
            };
        };

        YUD.removeClass(dd,'a-m-d-expand');
        var oAnim = new YAHOO.util.Anim(dd,oAttr,seconds ,oEaseType);
        oAnim.onComplete.subscribe(onComplete);
        oAnim.onTween.subscribe(onTween);
        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);
    },

    // Orbeon change: expose expand() as part of the API.
    expandCase : function(dl,dt,dd)
    {
        expand(dl,dt,dd)
    },

      // Orbeon change: expose collapse() as part of the API.
    collapseCase : function(dl,dt,dd)
    {
        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;

})();
