<script src="jquery-1.10.2.js"></script>
<script language="JavaScript">
function get_XmlHttp() {
  // create the variable that will contain the instance of the XMLHttpRequest object (initially with null value)
  var xmlHttp = null;

  if(window.XMLHttpRequest) {   // for Forefox, IE7+, Opera, Safari, ...
    xmlHttp = new XMLHttpRequest();
  }
  else if(window.ActiveXObject) { // for Internet Explorer 5 or 6
    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  }

  return xmlHttp;
}

// sends data to a php file, via GET and POST, and displays the received answer
function ajaxrequest(php_file, tagID) {
  var request =  get_XmlHttp();        // call the function for the XMLHttpRequest instance

  // create pairs index=value with data that must be sent to server, via POST
  var  d_post = 'content='+document.getElementById('broadcast').value+'&submit=1'+'&enable_text='+document.getElementById('enable_text').value+'&status='+document.getElementById('status').value;
  //var  d_post = 'submit='+document.getElementById('submit').value+'&content='+document.getElementById('content').value+'&status='+document.getElementById('status').value+'&enable_text='+document.getElementById('enable_text').value;
  request.open("POST", "list.php", true);      // sets the request

  // adds  a header to tell the PHP script to recognize the data as is sent via POST
  request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  request.send(d_post);       // sends the request

  // Check request status
  // If the response is received completely, will be transferred to the HTML tag with tagID
  request.onreadystatechange = function() {
    if (request.readyState == 4) {
      document.getElementById('list').innerHTML = request.responseText;
    }
  }
}

function toggle(source)
{
    checkboxes = document.getElementsByName('option[]');
    for(var i=0, n=checkboxes.length;i<n;i++)
    {
        checkboxes[i].checked = source.checked;
    }
}

function toggleDisabled(_checked)
{
    document.getElementById('broadcast').disabled = _checked ? false : true;
}
</script>
            <table>
                <tr>
                    <th><input type="checkbox" onClick="toggle(this)" /></th>
                    <th>test</th>
                    <th>test</th>
                    <th>test</th>
                </tr>
            </table>
<div id="list"></div>

            <form action="list.php" method="post" name="form2" onsubmit="ajaxrequest('list.php', 'content'); return false;">
            <p>Texte:
            <input type="checkbox" id="enable_text" name="enable_text" onchange="toggleDisabled(this.checked)"/>
            Status:
            <select name="status" id="status">
                <option VALUE="waiting" selected="selected"> en attente</option>
                <option VALUE="solved"> résolu</option>
                <option VALUE="closed"> clos</option>
            </select>
            <input id="submit" type="submit" value="Send" />
            </p>
            <textarea disabled id="broadcast" name="content" rows="4" cols="80"></textarea>
            </form>