/**
 * 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:
 * $("form").dropdownmenu();
 *
 * http://blog.ginader.de
 *
 * Copyright (c) 2007 Dirk Ginader (ginader.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */
(function($) {
	$.fn.dropdownmenu = function(settings) {
		$(this).each(function() {
			var f = $(this);
			var selects = f.find("select");
            selects.each(function(i) {
                var s = $(this);
    			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("input[@type=submit]").remove();
			$(this).find("button[@type=submit]").remove();
		});
		return this;
	};
	dropdownmenuonchange = function(s,f){
		if(s.selectedIndex != s.activeIndex && !s.changed){
			s.changed = true;
			f.submit();
		}
	}
})(jQuery);