/**
 * 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("input[type=submit]").remove();
		});
		return this;
	};
	dropdownmenuonchange = function(s,f){
		if(s.selectedIndex != s.activeIndex && !s.changed){
			s.changed = true;
			f.submit();
		}
	}
})(jQuery);