Problem with the code!

Hello, i have a problem with the code!

In some pc's "with internet explorel" when users click to a link it displays the code with a new window. At my pc "with the firefox" i click a link and when i go to a previews page and i go to next page with the arrows (up - left of the browser) then it shows me the code!

That problem it shows me suddenly with joomla 1.5 and i made update to joomla 2.5 but this problem it steel to appear!

my site is www.t-bet.gr

Can you help me please?

Please edit file /templates/hot_sportal/css/template_css.php and remove lines:

<?php

and

header("Content-type: text/css");
?>

I remove this lines but nothing happens

You also have that line in:

template_css_ie78.php

It works!!! Thank you sir!