function xmlhttpPost(strURL) {

      var xmlHttpReq = false;

      var self = this;

      // Mozilla/Safari

      if (window.XMLHttpRequest) {

          self.xmlHttpReq = new XMLHttpRequest();

      }

      // IE

      else if (window.ActiveXObject) {

          self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");

      }

      self.xmlHttpReq.open('POST', strURL, true);

      self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

      self.xmlHttpReq.onreadystatechange = function() {

          if (self.xmlHttpReq.readyState == 4) {

              updatepage(self.xmlHttpReq.responseText);

          }

      }

      self.xmlHttpReq.send(getquerystring());

  }

  

  //   builds a string that gets sent to the PHP script

  

  function getquerystring() {

      var form     = document.forms['form1'];

      var email = form.email.value;

      var message = form.message.value;

      qstr = 'email=' + escape(email) + '&message=' + message; 

      return qstr;

  }

  

  function updatepage(str){

      document.getElementById("result").innerHTML = str;

  }