$TYPO3_CONF_VARS['FE']['eID_include']['my_prototype_ajax'] = 'EXT:prototype_ajax/ajax/ajax.php';

// Error if script used directly not over index.php and eID
  if (!defined ('PATH_typo3conf')) die ('Could not access this script directly!')
 
  //Get name from GET-Array over Ajax
  $myname = t3lib_div::_GET('myname');
 
  //Generate output
  $res = '<strong>Wazzzup '.$myname.'!!!</strong>';
 
  //Serialize data to xml
  $ajax_return_data = t3lib_div::array2xml(array('data'=&gt;$res));
 
  //Generate HTTP-headers
  header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
  header('Cache-Control: no-cache, must-revalidate');
  header('Pragma: no-cache');
  header('Content-Length: '.strlen($ajax_return_data));
  header('Content-Type: text/xml');
 
  //Send response data
  echo $ajax_return_data;
  exit;

 function getDataOverAjax() {
 
  //All data going to serverside app over index.php. 
 
  var url = "";
 
  //Get name from field with id=myname
  var myname = $("myname").value;
 
  //Generate parameters to send to serverside app over GET
 
  var pars = "eID=my_prototype_ajax&myname=" + myname;
 
  //Send data over GET and define function to handle servers response
 
  var myAjax = new Ajax.Request(url, {method: "get", parameters: pars, onComplete: updateDivData});
 }
 
 function updateDivData(orgRequest) {
 
   //Get data in xml-Format
   var xmldoc = orgRequest.responseXML;
 
  //Get needed parameters from xml
  var result = xmldoc.getElementsByTagName("data")[0].firstChild.data;
 
  //Display content in our div
  $("workplace").innerHTML = result;
 }

function main($content, $conf) {
  $this->conf = $conf;
  $this->pi_setPiVarDefaults();
  $this->pi_loadLL();
 
  $content='<strong>This is a few paragraphs:</strong>
                 This is line 1
                 This is line 2
<h3>This is a form:</h3>
<form action="'.$this-&gt;pi_getPageLink($GLOBALS['TSFE']-&gt;id).'" method="POST">
<input name="'.$this-&gt;prefixId.'[input_field]" type="text" value="'.htmlspecialchars($this-&gt;piVars['input_field']).'" />
<input name="'.$this-&gt;prefixId.'[submit_button]" type="submit" value="'.htmlspecialchars($this-&gt;pi_getLL('submit_button_label')).'" />
</form>
 
You can click here to '.$this-&gt;pi_linkToPage('get to this page again',$GLOBALS['TSFE']-&gt;id);
return $this-&gt;pi_wrapInBaseClass($content);
}

function main($content, $conf) {
  $this->conf = $conf;
  $this->pi_setPiVarDefaults();
  $this->pi_loadLL();
 
  // include Prototype-Library
  $GLOBALS['TSFE']-&gt;additionalHeaderData[$this-&gt;prefixId] = '<script src="typo3/contrib/prototype/prototype.js" type="text/javascript"><!--mce:0--></script>';  
 
  //Include our script
  $GLOBALS['TSFE']-&gt;additionalHeaderData[$this-&gt;prefixId] .= '<script src="typo3conf/ext/rqmng/js/get.js" type="text/javascript"><!--mce:1--></script>';
 
  //include div to display response information and fields to send data on serverside app 
 
  $content='
<div id="workplace">
<input id="myname" name="myname" type="text" value="MyName" />
<input onclick="getDataOverAjax();" name="Get Data over Ajax!" type="button" value="Get Data over Ajax!" /></div>
 
';
return $this-&gt;pi_wrapInBaseClass($content);