Paypal buy now button issue

I changed my HTML code for the Buy now button to include another image instead of the standard paypal button but when i tested that new button it redirected me to "You have requested an outdated version of PayPal. This error often results from the use of bookmarks." instead of the checkout page. Clearing the cookies doesn't help either.

I just changed https://www.paypalobjects.com/en_GB/...CC_LG_wCUP.gif to limitedtimeoffer.png

The original code was

<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="XANEH2TGKNPFU">
<input type="image" src="https://www.paypalobjects.com/en_GB/HK/i/btn/btn_buynowCC_LG_wCUP.gif" border="0" name="submit" alt="PayPal -- The safer, easier way to pay online.">
<img alt="" border="0" src="https://www.paypalobjects.com/en_GB/i/scr/pixel.gif" width="1" height="1">
</form>

The updated HTML code is

<form action="https://www.paypal.com/cgi-

bin/webscr" method="post"><input name="cmd" value="_s-

xclick" type="hidden" /><input name="hosted_button_id" value="XANEH2TGKNPFU" type="hidden" /><input src="LimitedTimeOffer.png" name="submit" alt="PayPal -- The safer, easier

way to pay online." type="image" border="0" /><img alt="" src="https://www.paypalobjects.com/en_GB/i/scr/%0A%0Apixel.gif" height="1" width="1" border="0" /></form>