/**
*    Chained Selects for jQuery 
*    Copyright (C) 2008 Ziadin Givan www.CodeAssembly.com  
*
*    This program is free software: you can redistribute it and/or modify
*    it under the terms of the GNU General Public License as published by
*    the Free Software Foundation, either version 3 of the License, or
*    (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU General Public License for more details.
*
*    You should have received a copy of the GNU General Public License
*    along with this program.  If not, see http://www.gnu.org/licenses/
*
*    
*   settings = { usePost : true, before:function() {}, after: function() {}, default: null, parameters : { parameter1 : 'value1', parameter2 : 'value2'} }	
*   if usePost is true, then the form will use POST to pass the parameters to the target, otherwise will use GET
*   "before" function is called before the ajax request and "after" function is called after the ajax request.
*   If defaultValue is not null then the specified option will be selected.
*   You can specify additional parameters to be sent to the the server in settings.parameters.
*
*/;(function($){jQuery.fn.chainSelect=function(target,url,settings)
{return this.each(function()
{$(this).change(function()
{settings=$.extend({after:null,before:null,usePost:false,defaultValue:null,parameters:{'_id':$(this).attr('id'),'_name':$(this).attr('name')}},settings);settings.parameters._value=$(this).val();if(settings.before!=null)
{settings.before(target);}
ajaxCallback=function(data,textStatus)
{$(target).html("");data=eval(data);if(data!=null){for(i=0;i<data.length;i++){$(target).get(0).add(new Option(data[i].name,data[i].value),document.all?i:null);}}else{$(target).get(0).add(new Option('- select a country -',0),document.all?i:null);}
if(settings.defaultValue!=null)
{$(target).val(settings.defaultValue);}else
{$("option:first",target).attr("selected","selected");}
if(settings.after!=null)
{settings.after(target);}
$(target).change();};if(settings.usePost==true)
{$.post(url,settings.parameters,ajaxCallback);}else
{$.get(url,settings.parameters,ajaxCallback);}});});};})(jQuery);