function makeObject(){
var x;
if (window.ActiveXObject) {
x = new ActiveXObject("Microsoft.XMLHTTP");
}else if (window.XMLHttpRequest) {
x = new XMLHttpRequest();
}
return x;
}
var request = makeObject(); 

var the_content;
function check_content(the_content){
request.open('get', the_content);
request.onreadystatechange = parseCheck_content;
request.send('');
}
function parseCheck_content(){
if(request.readyState == 1){
document.getElementById('content').innerHTML = 'Loading...';
}
if(request.readyState == 4){
var answer = request.responseText;
document.getElementById('content').innerHTML = answer;
}
} 

function check_content(the_content){
request.open('get', the_content);
request.onreadystatechange = parseCheck_content;
request.send('');
} 

function parseCheck_content(){
if(request.readyState == 1){ 
document.getElementById('content').innerHTML = '<span style="background-color:red;color:#fff;">Loading...</span>';
} 
if(request.readyState == 4){
var answer = request.responseText;
document.getElementById('content').innerHTML = answer;
}
}