var multishippingdesign = function(){
    methodHeader = $$('.multiple-checkout .col2-set .info-box .sp-methods');
    methodHeader.each(function(headerElement){
        headerTitle = headerElement.up().down('h3');
        headContent = headerTitle.innerHTML;
        newHead = '<div class="multiShippingCarrierTitle"><h3 class="box-title">' + headContent + '</h3></div>';
        headerTitle.replace(newHead);
    });
}
document.observe('dom:loaded', multishippingdesign);