Нужна помощь по Jquery

(function($) {
var debugMode = false;

function debug(msg) {
if (!debugMode) { return; }
if (window.console && window.console.log){
window.console.log(msg);
} else {
alert(msg);
}
}

$.fn.accordion = function(config) {
var defaults = {
"handle": "h3",
"panel": ".panel",
"speed": 200,
"easing": "swing",
"canOpenMultiple": false,
"canToggle": false,
"activeClassPanel": "open",
"activeClassLi": "active",
"lockedClass": "locked",
"loadingClass": "loading"
};

if (config) {
$.extend(defaults, config);
}

this.each(function() {
var accordion = $(this),
reset = {
height: 0,
marginTop: 0,
marginBottom: 0,
paddingTop: 0,
paddingBottom: 0
},
panels = accordion.find(">li>" + defaults.panel)
.each(function() {
var el = $(this);
el
.removeClass(defaults.loadingClass)
.css("visibility", "hidden")
.data("dimensions", {
marginTop: el.css("marginTop"),
marginBottom: el.css("marginBottom"),
paddingTop: el.css("paddingTop"),
paddingBottom: el.css("paddingBottom"),
height: this.offsetHeight — parseInt(el.css("paddingTop")) — parseInt(el.css("paddingBottom"))
})
.bind("panel-open.accordion", function(e, clickedLi) {
var panel = $(this);
clickedLi.addClass(defaults.activeClassLi);
panel
.css($.extend({overflow: "hidden"}, reset))
.addClass(defaults.activeClassPanel)
.show()
.animate($.browser.msie && parseInt($.browser.version) < 8? panel.data("dimensions"): $.extend({opacity: 1}, panel.data("dimensions")), {
duration: defaults.speed,
easing: defaults.easing,
queue: false,
complete: function(e) {
if ($.browser.msie) {
this.style.removeAttribute('filter');
}
$(this).removeAttr("style");
}
});
})
.bind("panel-close.accordion", function(e) {
var panel = $(this);
panel.closest("li").removeClass(defaults.activeClassLi);
panel
.removeClass(defaults.activeClassPanel)
.css({
overflow: "hidden"
})
.animate($.browser.msie && parseInt($.browser.version) < 8? reset: $.extend({opacity: 0}, reset), {
duration: defaults.speed,
easing: defaults.easing,
queue: false,
complete: function(e) {
if ($.browser.msie) {
this.style.removeAttribute('filter');
}
panel.hide();
}
});
})
.hide()
.css("visibility", "visible");

return el;
}),
handles = accordion.find(
" > li > "
+ defaults.handle
)
.wrapInner('<a class="accordion-opener" href="#open-panel" />');

accordion
.find(
" > li."
+ defaults.activeClassLi
+ " > "
+ defaults.panel
+ ", > li."
+ defaults.lockedClass
+ " > "
+ defaults.panel
)
.show()
.addClass(defaults.activeClassPanel);

var active = accordion.find(
" > li."
+ defaults.activeClassLi
+ ", > li."
+ defaults.lockedClass
);

if (!defaults.canToggle && active.length < 1) {
accordion
.find(" > li")
.first()
.addClass(defaults.activeClassLi)
.find(" > " + defaults.panel)
.addClass(defaults.activeClassPanel)
.show();
}

accordion.delegate(".accordion-opener", "click", function(e) {
e.preventDefault();
e.stopImmediatePropagation();

var clicked = $(this),
clickedLi = clicked.closest("li"),
panel = clickedLi.find(">" + defaults.panel).first(),
open = accordion.find(
" > li:not(."
+ defaults.lockedClass
+ ") > "
+ defaults.panel
+ "."
+ defaults.activeClassPanel
);

if (!clickedLi.hasClass(defaults.lockedClass)) {
if (panel.is(":visible")) {
if (defaults.canToggle) {
panel.trigger("panel-close");
}
} else {
panel.trigger("panel-open", [clickedLi]);
if (!defaults.canOpenMultiple) {
open.trigger("panel-close");
}
}
}
});
});

return this;
};
})(jQuery);