function Is() {
    var agent;
    agent  = navigator.userAgent.toLowerCase();
    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);
    this.ns    = ((agent.indexOf('mozilla') != -1) &&
      ((agent.indexOf('spoofer')  ==   -1) && (agent.indexOf('compatible') == -1)));
    this.ns4   = (this.ns && (this.major == 4));
    this.ns6   = (this.ns && (this.major >= 5));
    this.ie    = (agent.indexOf("msie") != -1);
    this.ie3   = (this.ie && (this.major  < 4));
    this.ie4   = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0") == -1));
    this.ie5   = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.0") != -1));
    this.ie55  = (this.ie && (this.major == 4) && (agent.indexOf("msie 5.5") != -1));
    this.ie6  = (this.ie && (agent.indexOf("msie 6.0")!=-1) );
}
var is = new Is();
/* Create a new XMLHttpRequest object to talk to the Web server */
var xmlHttp = false;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
  xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
  try {
    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
  } catch (e2) {
    xmlHttp = false;
  }
}
@end @*/
if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
  xmlHttp = new XMLHttpRequest();
}

function myGetElement(id)
{
  if (document.getElementById)
  {
    return(document.getElementById(id));
  }
  if (document.all)
  {
    return(document.all[id]);
  }
  if (document.layers)
  {
    return(document.layers[id]);
  }
}

function updateCalendar() {
  var response;

  if (xmlHttp.readyState == 4) {
    response = xmlHttp.responseText;
    if (response != '') {
      calDiv = myGetElement('calendar');
      if (calDiv) {
        calDiv.innerHTML = response;
      }
    }
  }
}

function showMonth(month) {
  var url;

  url = '/ajax/getcalendar.php?m='+month;
  xmlHttp.open("GET", url, true);
  xmlHttp.onreadystatechange = updateCalendar;
  xmlHttp.send(null);
}