ajax files

var ajaxResult=0,formaction;
var holder = "errorString";

function getvaldropdown(cid,hold)
{
holder = hold;
var url="ajax.php";
url=url+"?action=getCategoryValues&cid="+cid;
url=url+"&sid="+Math.random();
sendRequest(url);
}

function createRequestObject() {

var req;

if(window.XMLHttpRequest){
// Firefox, Safari, Opera...
req = new XMLHttpRequest();
} else if(window.ActiveXObject) {
// Internet Explorer 5+
req = new ActiveXObject("Microsoft.XMLHTTP");
} else {

alert('Problem creating the XMLHttpRequest object');
}

return req;

}

var http = createRequestObject();

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

function handleResponse() {

if(http.readyState == 4 && http.status == 200){

var response = http.responseText;

if(response) {
document.getElementById(holder).innerHTML = response;
}
}
}