Very simple to fix as I'm sure you'll be happy to know, your current code:
Code:
<a href="http://www.mozilla.com/en-US/firefox/">
<img src="images/firefox.gif" border="0"/></a>
<a href="http://www.apple.com/safari/">
<img src="images/safari.gif" border="0"/></a>
<a hfref="http://www.google.com/chrome">
<img src="images/chrome.gif" border="0"/></a>
You've put "hfref", just a simple typo, correct it to "<a href" and it should work fine.
It's sometimes hard to spot these problems if you've been staring at the code for a while, so it's good to get another view of it.
Good luck
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