function createRequestObject() {
    if(navigator.appName == "Microsoft Internet Explorer")
        return new ActiveXObject("Microsoft.XMLHTTP");
    else
        return new XMLHttpRequest();
}

var http = createRequestObject();

function sendAjaxRequest(action) {
    http.open('get', action);
    http.onreadystatechange = handleResponse;
    http.send(null);
}

function sendEditPlannedHoursAjaxRequest(action) {
    http.open('get', action);
    http.onreadystatechange = handleEditPlannedHoursResponse;
    http.send(null);
}

function handleResponse() {
    if(http.readyState != 4) return;
    var response = http.responseText;
    if(response.indexOf('|' != -1)){
      var update = response.split('|');
      document.getElementById(update[0]).innerHTML = update[1];
    }
}

function handleEditPlannedHoursResponse() {
    if(http.readyState != 4) return;
    var response = http.responseText;
    if(response.indexOf('|' != -1)){
      var update = response.split('|');
      document.getElementById(update[0]).innerHTML = update[1];
    }
    myForm.hours.focus();
}