// JScript File

function UpdateCheckout()
{
    var url = 'LoggingProxy.aspx?from3=1&domains=';
    var div = document.getElementById('plusDomains');
    var elem = div.getElementsByTagName('input');
    var link = document.getElementById('step3CheckoutPlus');

    for (var i = 0; i < elem.length; i++)
    {
        var node = elem[i];
        if (node.checked == true)
        {
            url += node.value + ',';
        }
    }
    
    link.href = url;
}