(function($){
$.fn.extend({
//pass the options variable to the function
accordion: function(options) {
var defaults = {
accordion: 'true',
speed: 500,
closedSign: '',
openedSign: ''
};
// Extend our default options with those provided.
var opts = $.extend(defaults, options);
//Assign current element to variable, in this case is UL element
var $this = $(this);
//add a mark [+] to a multilevel menu
$this.find("li").each(function() {
if($(this).find("ul").size() != 0){
//add the multilevel sign next to the link
var spantyped = opts.closedSign;
if($(this).find("ul:first").is(":visible")){
spantyped = opts.openedSign;
}
//$(this).find("a:first").append(""+ spantyped +"");
$(this).find("span:first").append(spantyped);
//$(this).find("a").eq(1).append(spantyped);
//avoid jumping to the top of the page when the href is an #
if($(this).find("a:first").attr('href') == "#"){
$(this).find("a:first").click(function(){return false;});
}
}
});
//open active level
$this.find("li.active").each(function() {
$(this).parents("ul").slideDown(opts.speed);
$(this).parents("ul").parent("li").find("span:first").html(opts.openedSign);
});
$this.find("li span").click(function() {
if($(this).parent().find("ul").size() != 0){
if(opts.accordion){
//Do nothing when the list is open
if(!$(this).parent().find("ul").is(':visible')){
parents = $(this).parent().parents("ul");
visible = $this.find("ul:visible");
visible.each(function(visibleIndex){
var close = true;
parents.each(function(parentIndex){
if(parents[parentIndex] == visible[visibleIndex]){
close = false;
return false;
}
});
if(close){
if($(this).parent().find("ul") != visible[visibleIndex]){
$(visible[visibleIndex]).slideUp(opts.speed, function(){
$(this).parent("li").find("span:first").html(opts.closedSign);
});
}
}
});
}
}
if($(this).parent().find("ul:first").is(":visible")){
$(this).parent().find("ul:first").slideUp(opts.speed, function(){
$(this).parent("li").find("span:first").delay(opts.speed).html(opts.closedSign);
});
}else{
$(this).parent().find("ul:first").slideDown(opts.speed, function(){
$(this).parent("li").find("span:first").delay(opts.speed).html(opts.openedSign);
});
}
}
});
}
});
})(jQuery);