''duplicate of https://support.mozilla.org/en-US/questions/1089194 - locking'' Hello I have added a paypal drop down menu button on my website. However when I view my website on firefox I can't use the paypal drop down menu when I go to click and view the various drop down menu options it does not work. I have tried my website on internet explorer and the paypal drop down menu works on internet explorer when I click on the arrow on the drop down menu I can view and highlight the option I want to check out with on paypal. This is the paypal drop down menu code that I am using on my website : <div class="paypalbutton"> <form target="paypal" 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="Q3WRDRB4UWNXA"> <table> <tr><td><input type="hidden" name="on0" value="Colours">Colours</td></tr><tr><td><select name="os0"> <option value="Gold">Gold £480.00 GBP</option> <option value="Black">Black £480.00 GBP</option> </select> </td></tr> </table> <input type="hidden" name="currency_code" value="GBP"> <input type="image" src="https://www.paypalobjects.com/en_GB/i/btn/btn_cart_LG.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> </div>