I am trying to make specific radiobutton checked on page load and tried a lot of ways, but no one worked for me. This is a part of orderform on my webstore.

  <input type="radio" name="sPaymentCarrier" id="pC_2-1" value="1;2;0.00" 
onclick="countCarrierPrice( this )" />
<label for="pC_2-1">0</label>

Actually this radiobutton is the only on radiobutton on page, and it must be checked to let user make order.

I tried

$(function() {
    var $radios = $('input:radio[name=sPaymentCarrier]');
    if($radios.is(':checked') === false) {
        $radios.filter('[value=1;2;0.00]').attr('checked', true);
    }
});

and

$('input:radio[name="sPaymentCarrier"]').filter('[value="1;2;0.00"]').attr('checked', true);

but none of these ways worked. Also I tried a lot of other codes, but when I refreshed page I still saw this button unchecked. I guess maybe I have to set up jquery click on this button instead of select, but actually I cannot make this work.

Any help is appreciated!