<script language="javascript">

var  dataTimer = "";


function startLookup() {
sendRequest();
}
function StartTimer() {
setInterval("sendRequest()", 1000);
}
    function createRequestObject() {
StartTimer();

       var req;

       if(window.XMLHttpRequest){
          // Firefox, Safari, Opera...//
          req = new XMLHttpRequest();
       } else if(window.ActiveXObject) {
          // Internet Explorer 5+//
          req = new ActiveXObject("Microsoft.XMLHTTP");
       } else {
//error//
          alert('Problem creating the XMLHttpRequest object');
       }

       return req;

    }

    // Make the XMLHttpRequest object
    var http = createRequestObject();

    function sendRequest(position) {

       // Open PHP script for requests
       http.open('get', 'show.php');
       http.onreadystatechange = handleResponse;
       http.send(null);
        }

    function handleResponse() {

       if(http.readyState == 4 && http.status == 200){

          // Text returned FROM the PHP script
          var response = http.responseText;

          if(response) {
             // UPDATE ajaxTest content
             document.getElementById("searchResults").innerHTML = response;
          }

       }

    }
</script>