Jquery :: Tools Breaking Layout In IE7 And 8

I subcontracted a programmer who replaced my jquery.js with a different version of jquery. This version breaks my function, but my version breaks the layout. I have a function that works with

Code:
jquery.tools.min.js
But not with
Code:
jquery.js?ver=1.4.2

Here's is my function:
Code:
<SCRIPT type="text/javascript">
$(document).ready(function(){
$('.theVideoLink').click(function(e){
e.preventDefault();
$('#VideoContent').load($(this).attr('href'));
});
});
</script>

I need this code to work with
Code:
jquery.js?ver=1.4.2
But it doesn't. It works with
Code:
jquery.tools.min.js
But this jquery.tools.min.js breaks the layout in IE7&8.