// JavaScript Document

function createRequestObject(){
  var request_o;
  var browser = navigator.appName;
  if(browser == "Microsoft Internet Explorer"){
    request_o = new ActiveXObject("Microsoft.XMLHTTP");
  }else{
    request_o = new XMLHttpRequest();
  }
  return request_o;
}
var http = createRequestObject();

function getDealer(dots){
  var zip = document.find_dealer.searchzip.value;
  http = createRequestObject();
  http.open('post', dots + 'ajax/zip_search.php');
  http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
  http.send('zip=' + zip);
  http.onreadystatechange = handleDealer;
  function handleDealer(){
    if(http.readyState == 4){
      var response = http.responseText;
      document.getElementById('find_dealer').innerHTML = response;
    }
  }
}