/* 
 * jQuery - Collapser - Plugin v1.0
 * http://www.aakashweb.com/
 * Copyright 2010, Aakash Chakravarthy
 * Released under the MIT License.
 */

(function($){
    $.fn.collapser=function(options,beforeCallback,afterCallback){
        var defaults={
            target:'next',
            targetOnly:null,
            effect:'slide',
            changeText:true,
            expandHtml:'Expand',
            collapseHtml:'Collapse',
            expandClass:'',
            collapseClass:''
        };

        var options=$.extend(defaults,options);
        var expHtml,collHtml,effectShow,effectHide;
        if(options.effect=='slide'){
            effectShow='show';
            effectHide='hide';
        }else{
            effectShow='fadeIn';
            effectHide='fadeOut';
        }
        if(options.changeText==true){
            expHtml=options.expandHtml;
            collHtml=options.collapseHtml;
        }
        function callBeforeCallback(obj){
            if(beforeCallback!==undefined){
                beforeCallback.apply(obj);
            }
        }
        function callAfterCallback(obj){
        if(afterCallback!==undefined){
            afterCallback.apply(obj);
        }
    }
    function hideElement(obj,method){
    callBeforeCallback(obj);
    if(method==1){
        obj[options.target](options.targetOnly)[effectHide]();
        obj.html(expHtml);
        obj.removeClass(options.collapseClass);
        obj.addClass(options.expandClass);
    }else{
        $(document).find(options.target)[effectHide]();
        obj.html(expHtml);
        obj.removeClass(options.collapseClass);
        obj.addClass(options.expandClass);
    }
    callAfterCallback(obj);
}
function showElement(obj,method){
    callBeforeCallback(obj)
    if(method==1){
        obj[options.target](options.targetOnly)[effectShow]();
        obj.html(collHtml);
        obj.removeClass(options.expandClass);
        obj.addClass(options.collapseClass);
    }else{
        $(document).find(options.target)[effectShow]();
        obj.html(collHtml);
        obj.removeClass(options.expandClass);
        obj.addClass(options.collapseClass);
    }
    callAfterCallback(obj);
}
function toggleElement(obj,method){
    if(method==1){
        if(obj[options.target](options.targetOnly).is(':visible')){
            hideElement(obj,1);
        }else{
            showElement(obj,1);
        }
    }else{
    if($(document).find(options.target).is(':visible')){
        hideElement(obj,2);
    }else{
        showElement(obj,2);
    }
}
}
return this.each(function(){
    if($.fn[options.target]&&$(this)[options.target]()){
        $(this).toggle(function(){
            toggleElement($(this),1);
        },function(){
            toggleElement($(this),1);
        });
    }else{
        $(this).toggle(function(){
            toggleElement($(this),2);
        },function(){
            toggleElement($(this),2);
        });
    }
    if($.fn[options.target]&&$(this)[options.target]()){
        if($(this)[options.target]().is(':hidden')){
            $(this).html(expHtml);
            $(this).removeClass(options.collapseClass);
            $(this).addClass(options.expandClass);
        }else{
            $(this).html(collHtml);
            $(this).removeClass(options.expandClass);
            $(this).addClass(options.collapseClass);
        }
    }else{
    if($(document).find(options.target).is(':hidden')){
        $(this).html(expHtml);
    }else{
        $(this).html(collHtml);
    }
}
});
};

})(jQuery);