--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/site-content/js/jquery.chainedSelects.js	Sun Aug 09 22:52:45 2009 +0530
@@ -0,0 +1,85 @@
+/**
+*    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.
+*
+*/
+jQuery.fn.chainSelect = function( target, url, settings ) 
+{
+  return this.each( function()
+  {
+	$(this).change( function( ) 
+	{
+		settings = jQuery.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("");//clear old options
+			data = eval(data);//get json array
+			for (i = 0; i < data.length; i++)//iterate over all options
+			{
+			  for ( key in data[i] )//get key => value
+			  {	
+					$(target).get(0).add(new Option(data[i][key],[key]), document.all ? i : null);
+              }
+			}
+
+			if (settings.defaultValue != null)
+			{
+				$(target).val(settings.defaultValue);//select default value
+			} else
+			{
+				$("option:first", target).attr( "selected", "selected" );//select first option
+			}
+
+			if (settings.after != null) 
+			{
+				settings.after(target);
+			}
+
+			$(target).change();//call next chain
+		};
+
+		if (settings.usePost == true)
+		{
+			$.post( url, settings.parameters, ajaxCallback );
+		} else
+		{
+			$.get( url, settings.parameters, ajaxCallback );
+		}
+	});
+  });
+};
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