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,id){
request.open('get', the_content);
request.onreadystatechange = parseCheck_content;
request.send('');
var oldid = document.getElementById('currentpage').value;
document.getElementById('currentpage').value="";
imagechanger(oldid,'1');
imagechanger(id,'3');
document.getElementById('currentpage').value = id;
}

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;
	}
}