var ajaxRequest = null;
var dError = document.getElementById('error');
    function ajaxFun(){

        try{
            //For Opera Mini and Firefox
            ajaxRequest = new XMLHttpRequest();
            dError.innerHTML = "Your Browser supports Ajax Firefox <br/>";
            return ajaxRequest;
        } catch (e){
            try {
                //Internet Explorer
                ajaxRequest = new ActiveXObject('Msxml2.XMLHTTP');
                dError.innerHTML = "Your Browser supports Ajax Explorer";
                return ajaxRequest;
            } catch (e) {
                try{
                    ajaxRequest = new ActiveXObject('Microsoft.XMLHTTP');
                    dError.innerHTML = "Your Browser supports Ajax Explorer";
                    return ajaxRequest;

                } catch(e){
                    //Error happened
                    dError.innerHTML = "Sorry Upgrade your bowser";
                    console.log("Sorry Upgrade your bowser");
                }
            }
        }


    }


    function ajaxrequest(php_file, tagID) {
    ajaxFun()
  var  the_data = 'firstname=KSHD&secondname&lastname=gdhjks&username=Stancobridge&email=jhsds@gds.sd&password=nas&verifypwd=nas';

  ajaxRequest.open("POST", php_file, true);

  ajaxRequest.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  ajaxRequest.send(the_data);

  ajaxRequest.onreadystatechange = function() {
    if (ajaxRequest.readyState == 4) {
      document.getElementById(tagID).innerHTML = ajaxRequest.responseText;
    }
  }
}