var re_CreditCard = new RegExp('Credit Card: ');
window.onload=initAll;

function initAll() {
  if (document.title=="Order Checkout: Payment"){
    //payment page 
    var optiondropdown = document.getElementsByTagName('option'); 
    if (optiondropdown.length>0) {
       for ( var i = 0; i < optiondropdown.length; i++ ) { 
           if (optiondropdown[i].text.match(re_CreditCard)) {
                 newtext = optiondropdown[i].text 
                 optiondropdown[i].text = newtext.replace(re_CreditCard, "");
           }
        }
     }
  }
}