var cU = {
  init: function() {

	if (!document.getElementById) return;
    if (!Sarissa) return;

	cU.searchresults = document.getElementById('searchresults');
	cU.searchbox = document.getElementById('searchbox');
	if (!cU.searchresults) return;
	if (!cU.searchbox) return;
    if (!cU.searchresults.innerHTML) return;
	cU.addEvent(cU.searchbox, 'keyup', cU.getContent, false);
	},
  addEvent: function(elm, evType, fn, useCapture) {
    // cross-browser event handling for IE5+, NS6 and Mozilla
    // By Scott Andrew
    if (elm.addEventListener) {
      elm.addEventListener(evType, fn, useCapture);
      return true;
    } else if (elm.attachEvent) {
      var r = elm.attachEvent('on' + evType, fn);
      return r;
    } else {
      elm['on' + evType] = fn;
    }
  },
  getContent:function() {
	var xmlhttp = Sarissa.getXmlHttpRequest();
    var qs = cU.searchbox.value;

    xmlhttp.open('GET', 'search.php?term=' + qs, true);
    xmlhttp.onreadystatechange = function() {
      if (xmlhttp.readyState == 4) {
        cU.updateContent(xmlhttp.responseText);
      }
    };
    xmlhttp.send(null);
  },
  updateContent: function($html) {
    cU.searchresults.innerHTML = $html;
  }
}

cU.addEvent(window, 'load', cU.init, false);