how can i add an loading image in here?

[$php_mysql$]

i wish to add an loading image before the random.php displays content, how to do it?

			<script type="text/javascript">
	function getHTTPObject(){
		if (window.ActiveXObject) 
			return new ActiveXObject("Microsoft.XMLHTTP");
		else if (window.XMLHttpRequest) 
			return new XMLHttpRequest();
		else {
			alert("Your browser does not support AJAX.");
			return null;
		}
	}

	var inc=0;
	function callPHP(){
		httpObject = getHTTPObject();
		if (httpObject != null) {
			httpObject.open("GET", "http://localhost/script/random.php", true);
			httpObject.send(null);
			httpObject.onreadystatechange = setDiv;	
		}
		setTimeout("callPHP()", 5000);
	}

	function setDiv(){
		if(httpObject.readyState == 4){
			document.getElementById('oPut').innerHTML = httpObject.responseText;
		}
	}

	window.onload=callPHP;

	</script>	

[Sajesh Mohan]

function setDiv(){

if(httpObject.readyState == 4){

document.getElementById('oPut').innerHTML = httpObject.responseText;

}

else

{

document.getElementById("oPut").innerHTML="<img src=\"images/003.gif\" height=\"20\" width=\"20\" />";

}

                   

}

 

window.onload=callPHP;

 

 

 

 

try it

[$php_mysql$]

hi thanks i actually have tried that before but nothing showed