/**
 * jQuery.changeImg
 *  2010.06.17 h.yamagu
 *
 **/
(function($) {
    $.fn.changeImg = function(target, newImg ) {

        var id      = "#" + $(this).attr('id') +" .icon";
        var nowImg  = $(target).attr("src");
        var changed = false;

        var position = nowImg.lastIndexOf("/") + 1;
        var newImg = nowImg.substr(0, position) + newImg;

        var checkImage = function() {
            return ( $(target).attr("src") == newImg );
        }

        $(this).click(function(){
            if ( checkImage() == false) {
                change();
            } else {
                undo();
            }
        });

        var change = function(){
            $(target).attr("src", newImg);
//            changed = true;
        }

        var undo = function(){
            $(target).attr("src", nowImg);
//            changed = false;
        }


    }
})(jQuery);