<noscript><a style="text-decoration:none; border:0px;" href="http://server.website.com/ad?f&pid=2e9826de-a081-4f50-b771-9ae9145e123b&type=1&u=http%3A%2F%2Fwww.test123.com&x=&y=" target="_blank"><img border="0" src="http://server.website.com/ad?f&pid=2e9826de-a081-4f50-b771-9ae9145e123b&type=1" width="300" height="250" /></a></noscript>
When this gets run on the first load with Javascript disabled it will just print to the screen without interpreting the HTML:
<a style="text-decoration:none; border:0px;" href="http://server.website.com/ad?f&pid=2e9826de-a081-4f50-b771-9ae9145e123b&type=1&u=http%3A%2F%2Fwww.test123.com&x=&y=" target="_blank"><img border="0" src="http://server.website.com/ad?f&pid=2e9826de-a081-4f50-b771-9ae9145e123b&type=1" width="300" height="250" /></a>
Refreshing the page always displays it correctly.
Looking at the requests and responses nothing looks all that different from the ones that get served properly.
Help appreciated!