Slidemenu bei klick schließen

Hallo,
ich habe ein Slide menu modul und möchte nun das beim klick auf den hauptmenüpunkt die subnavi wieder zurück slidet...könnt ihr mir helfen?

function accordionMenu(menuId, srcExpandImage, srcCollapseImage, accOptions, accHoverDelay, bDoHover) {
if($(menuId)){

// getting accordion parent items ("li" tags with class "parent")
$(menuId).accParentItems = [];

for(var i = 0; i < $(menuId).childNodes.length; i++) {

if($(menuId).childNodes[i].className.indexOf('parent') >= 0){
$(menuId).accParentItems.push($(menuId).childNodes[i]);
}
}

$(menuId).accTogglers = [];
$(menuId).accElements = [];
var startItem = -1;

for(var i = 0; i < $(menuId).accParentItems.length; i++) {

if(srcExpandImage.length > 0){

// creating accordion togglers
var accToggler = document.createElement("img");

accToggler.setAttribute("title","Expand");
accToggler.setAttribute("src",srcExpandImage);
}
else
{
var accToggler = document.createElement("span");
}
$(menuId).accParentItems[i].insertBefore(accToggler, $(menuId).accParentItems[i].firstChild);

$(menuId).accTogglers.push(accToggler);

// accordion elements
$(menuId).accElements.push($(menuId).accParentItems[i].getElementsByTagName('ul')[0]);

// searching for active menu item to make the accordion show its sub-items when page loads
if ( $(menuId).accParentItems[i].className.indexOf('active') >= 0 ) {
startItem = i;
}
}

//create our Accordion instance
if ( $(menuId).accParentItems.length > 0 ){
$(menuId).Accordion = new Accordion($(menuId).accTogglers, $(menuId).accElements, $merge({
opacity: false,
alwaysHide: true,
show: startItem,
duration: 600,
transition: Fx.Transitions.Bounce.easeOut,

onActive: function(toggler, element){
element.parentNode.parentNode.setStyle('height', 'auto');
toggler.setAttribute("src", srcCollapseImage);
toggler.setAttribute("title","Collapse");
},
onBackground: function(toggler, element){
element.parentNode.parentNode.setStyle('height', 'auto');
element.setStyle('height', element.offsetHeight+'px');
toggler.setAttribute("src", srcExpandImage);
toggler.setAttribute("title","Expand");
}

}, accOptions)

);
}

accTimer = null;
if (!accHoverDelay) var accHoverDelay = 200;

for(var i = 0; i < $(menuId).accParentItems.length; i++) {

eval("function accOnclickFunc(){return function(){ if( $('"+menuId+"').accElements['+i+'].style.height == '0px' ) { $('"+menuId+"').Accordion.display("+i+") }}}");
eval("function accOnMouseoverFunc(){return function(){if( $('"+menuId+"').accElements['+i+'].style.height == '0px' ){accTimer = $('"+menuId+"').Accordion.display.delay("+accHoverDelay+", $('"+menuId+"').Accordion, "+i+");}}}");
eval("function accOnmouseoutFunc(){return function(){if($defined(accTimer)){$clear(accTimer);}}}");

$(menuId).accParentItems[i].firstChild.nextSibling.onclick = accOnclickFunc();
if (bDoHover==1) {
$(menuId).accParentItems[i].firstChild.nextSibling.onmouseover = accOnMouseoverFunc();
}
$(menuId).accParentItems[i].firstChild.nextSibling.onmouseout = accOnmouseoutFunc();
}

for(var i = 0; i < $(menuId).accElements.length; i++) {
$(menuId).accElements[i].setAttribute('id', menuId+'_'+i);
accordionMenu(menuId+'_'+i, srcExpandImage, srcCollapseImage, accOptions, accHoverDelay, bDoHover)
}

}
}