Scriptkiddies
<div id="status">
Status: <font color=green>OK</font>
<img src="http://www.scriptkiddies.nl/images/header.jpg" onerror="error()" width="0" heigth="0">
</div>
<script>
function error(){
document.getElementById("status").innerHTML="Status: <font color=red>Error</font>"
}
</script>