Solving "Internet Explorer cannot open the Internet site http://xyz.com. Operation aborted."
This bug exists in IE6 and IE7 and is caused by a JavaScript that tries to modify a tag that hasn't been closed (yet).
For example this one:
<div id="x">
<script type="text/javascript">
$('x').replace("wrong");
</script>
</div>
This example fixes the problem, because the script is defined after the tag that it tries to modify:
<div id="x">
</div>
<script type="text/javascript">
$('x').replace("correct");
</script>
See BUG: Error message when you visit a Web page or interact with a Web application in Internet Explorer: 'Operation aborted' for a detailed explanation of the problem.