Problem With Payment Radio-Buttons

[carrocero]

Hi, im having a problem in my order-payment.tpl

 

There is 3 options to pay: Credit card, paypal or bankwire. One of each has a radio button, so when one is selected and press continue everything is ok but the problem is when no one is selected. In this case if i press continue it goes automatically to Paypal proccess. Here is part of my code where i suppose the problem is but i dont know where exactly...

 

PAYPAL BUTTON

 

<p style="float:right; margin-top:350px !important; right:375px !important;  position:absolute">
<input type="RADIO" style="margin-right:-20px !important; float:right !important; margin-top:10px !important " name="button" value="^button3^" data-href="javascript:void(0)" <a href="javascript:void(0)" ><img src="{$base_dir_ssl}modules/paypal/img/logos/GB_PayPal_logo_80x35.png" /><BR>   </BR>
</p>

 

CONTINUE BUTTON

 

<input type="submit" style="margin-top:80px !important; margin-left:550px !important; text-transform:uppercase;  cursor:pointer ;font-family: 'Coming soon'; font-size:16px; background:none; border:2px solid; font-weight:bold; height:50px; width:160px"  onmouseover="this.style.backgroundColor='#cca14a'" onmouseout="this.style.background='none'"  onclick="$('#paypal_payment_form').submit();" value="Continue" id="btnFormSubmit">
</form>

 

 

 

 

As you can see onclick on "continue button" is sending automatically to paypal..but i dont know how to modify it to select paypal only if is selected as well the other ^button1^ and ^button2^...

 

Thanks in advance for your help!!