This is what i have used jack
<p>Buy 2 Bras for £15. Free short or thong when you buy the matching bra - Free Gift Box For All Orders

<p><input type="submit" name="Submit" value="Go To Offer" onClick="MM_goToURL('parent','http://www.lasenza.co.uk/index.asp?affid=102&utm_id=102&network=paidonresul ts');return document.MM_returnValue">
</tr>

and im using Firefox and IE 7