Flash doesn't load

I don't understand why my swf files doesn't load when I use AJAX (or is the problem something else?):
The website is here but you have to click View my latest works on the left side bar.
But on a separate page, it works (here)

function createRequest(){
	var req = false;
	try {
		req = new ActiveXObject('Msxml2.XMLHTTP');
	}catch (e2){
		try{
			req = new ActiveXObject('Microsoft.XMLHTTP');
	}catch(e3){
		try{
			req = new XMLHttpRequest();
	}catch(e1){
			req = false;
			}
		}
	}
	return req;
}
function myLatestWorks(){
	var req = createRequest();
	if(req){
		req.onreadystatechange = function(){
			if(req.readyState){
				if(req.readyState == 4){
					if(req.status == 200){
						var newDiv = document.createElement("div");

						newDiv.setAttribute('id', 'latestworks');
						newDiv.innerHTML = req.responseText;
						// And then inject it:
						document.body.appendChild(newDiv);
						//document.write(newDiv.innerHTML);
					}
				}
			}
		}
	req.open("GET","flashclips/portfolioupdates.php",true);
	req.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	req.send(null);
	}
}

Code (markup):