var xmlhttp = null;
var ie4 = false;
var query = null;

if (document.all) { 
  ie4 = true; 
}

function loadurl(dest) {
if (window.XMLHttpRequest) {
  xmlhttp = new XMLHttpRequest();
  xmlhttp.onreadystatechange = status_triggered;
  xmlhttp.open("GET", dest, true);
  xmlhttp.send(null);
} else {
    xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    xmlhttp.onreadystatechange = status_triggered;
    xmlhttp.open("GET", dest,true);
    xmlhttp.send();
  }
}

function status_triggered() {
  if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
      var newdiv = document.createElement("div");
      newdiv.innerHTML =  xmlhttp.responseText;
      newdiv.setAttribute("id","member_search");
      var olddiv = document.getElementById("member_search");
      var divparent = olddiv.parentNode;

      divparent.replaceChild(newdiv,olddiv);
  }
}

function processForm(form) {
  if (!form.searchstring.value) {
    alert('Please enter a given or surname to search for.');
    form.searchstring.focus();
  }
    
  if (form.searchstring.value) {
    query = form.searchstring.value;
    loadurl('member_search.cgi?email=;&ili=;&query='+query);
  }
}