//This JavaScript modified from this Tutorial.
 //AJAX Form POST/GET - HTML Form Submit with AJAX/Javascript Example/Tutorial 
 //http://www.captain.at/howto-ajax-form-post-get.php

 var http_request = false;
   function makeRequest(url, parameters, Container) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
	if(Container == 1) http_request.onreadystatechange = alertContents;
	if(Container == 2) http_request.onreadystatechange = alertContentsMenu;

http_request.open('POST', url, true);
	  http_request.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=utf-8');
      http_request.send(parameters);
   }

   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('myspan').innerHTML = result;            
         } else {
            //alert('There was a problem with the request.');
         }
      }
   }

   function alertContentsMenu() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('myspan_menu').innerHTML = result;            
         } else {
            //alert('There was a problem with the request.');
         }
      }
   }

   function getRestaurant(obj) {
	  var getstr = "";
      for (i=0; i<obj.childNodes.length; i++) {
         if (obj.childNodes[i].tagName == "INPUT") {
            if (obj.childNodes[i].type == "text") {
               getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value;
			   
            }

         }   
       
      }
      makeRequest('scripts/get_restaurants.php', getstr, 1);
   }
   
   function getMenues(obj) {
	  var getstr = "";
      for (i=0; i<obj.childNodes.length; i++) {
         if (obj.childNodes[i].tagName == "INPUT") {
            if (obj.childNodes[i].type == "text") {
               getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value;
			   
            }

         }   
       
      }
      makeRequest('scripts/get_menues.php', getstr, 2);
   }