How to remove +/- symbol off the price in Magento 1.9 product custom option

 app/code/core/Mage/Catalog/Block/Product/View/Options/Abstract.php and edited the line number 127

$priceStr = $sign;

to look like this:

$priceStr = '';

Magento 1.9 product Custom Options - make every first radio button checked

<script type="text/javascript">
var $j = jQuery.noConflict();
$j(document).ready(function(){

    $j('.options-list input.radio:first').attr('checked','checked');
    opConfig.reloadPrice();
});
</script>