FoxyShop Product Donation Code

<script type="text/javascript" charset="utf-8">
jQuery(function($) {

    var product_id = <?php echo $product['id']; ?>; //Stores the product ID
    var open_price_field_name = "Donation_Amount"; //This is the name of your open price field
    var radio_button_selectors_class = "variation-donation"; //This is the class assigned to your radio buttons
    var custom_selector_dkey = "custom-price"; //This is the dkey that will make your custom price field show up

    //Add a x: to the front of the open price field so it doesn't show up in cart as a product attribute
    $("#foxyshop_product_form_" + product_id + " input[name^='" + open_price_field_name + "']").attr("name", "x:" + $("#foxyshop_product_form_" + product_id + " input[name^='" + open_price_field_name + "']").attr("name"))

    //Runs every time the radio buttons are changed
    $("." + radio_button_selectors_class).click(function() {

        //If the "other" selection is made
        if ($("." + radio_button_selectors_class + ":checked").attr("displaykey") == custom_selector_dkey) {

            //Hide the display price
            $("#foxyshop_product_form_" + product_id + " .foxyshop_price").hide();

            //Get the new price from the Price Entry Field
            new_price = $("#foxyshop_product_form_" + product_id + " input[name^='x:" + open_price_field_name + "']").val();

            //Set the #price field name to then --OPEN-- hash to allow an open entry and stick in the contents of the new price
            $("#fs_price_" + product_id + "").attr("name", "price<?php echo foxyshop_get_verification('price', '--OPEN--'); ?>").val(new_price);

        //If a preset price is selected
        } else {

            //Set the #price field name to the default price and the value to the x:original price value
            $("#fs_price_" + product_id + "").attr("name", $("#fs_price_" + product_id).attr("name")).val($("#originalprice_" + product_id + "").val());

            //Show the Price
            $("#foxyshop_product_form_" + product_id + " .foxyshop_price").show();
        }
    });

    //Runs every time a key is pressed in the open price field
    $("#foxyshop_product_form_" + product_id + " input[name^='x:" + open_price_field_name + "']").keyup(function() {

        //Set the new price in the hidden form field
        $("#fs_price_" + product_id + "").attr("name", "price<?php echo foxyshop_get_verification('price', '--OPEN--'); ?>").val($(this).val());
    });

});
</script>