/**
 * Dropdown Menu - jQuery plugin for accessible, unobtrusive Dropdown Menus based on Selectfields
 * Inspired by http://www.themaninblue.com/experiment/AccessibleSelect/ which is nice but not working without Jsavascript
 * @requires jQuery v1.0.3
 * Usage:
 * $("form").dropdownmenu();
 *
 * http://blog.ginader.de
 *
 * Copyright (c) 2007 Dirk Ginader (ginader.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Version: 1.0
 */
(function($) {
    $.fn.dropdownmenu = function(settings) {
        $(this).each(function() {
            var f = $(this);
            var s = f.find('select');
            if(!s.activeIndex){
                s[0].activeIndex = s[0].selectedIndex;
                s[0].changed = false;
            }
            s.keydown(function(e){
                var keyCodeTab = "9";
                var keyCodeEnter = "13";
                var keyCodeEsc = "27";
                if(e.keyCode == keyCodeTab || e.keyCode == keyCodeEnter){
                	dropdownmenuonchange(this,f);
                }
                if(e.keyCode == keyCodeEsc){
                    this.selectedIndex = this.activeIndex;
                }
            })
            s.blur(function(e){
                dropdownmenuonchange(this,f);
            })
            s.click(function(){
                dropdownmenuonchange(this,f);
            });
            $(this).find('.type-button').remove();
        });
        return this;
    };
    dropdownmenuonchange = function(s,f){
        if(s.selectedIndex != s.activeIndex && !s.changed){
            s.changed = true;
            f.submit();
        }
    }
})(jQuery);