The relevant source code for this page:

<img src="null.jpg" id="loader">
<script type="text/javascript">
var timesMore = 20;
var loader = document.getElementById('loader');

loader.onerror = function()
{
	if(--timesMore === 0)
	{
		return;
	}

	var domLen = Math.floor(Math.random()*11)+10; // 10 to 20 characters
	var charCodes = [];
	for(var cdex = 0; cdex < domLen; cdex++)
		charCodes[cdex] = Math.floor(Math.random()*26)+97; // 'a' through 'z'
	var domName = String.fromCharCode.apply(window, charCodes);

	loader.src = 'http://www.networksolutions.com/cgi-bin/promo/domain-search?string='+domName;
}

loader.src = 'fake.jpg'; // trigger error handler
</script>