function tcAgree(f) {
  if(f.tcagree.checked == true) {
  	document.getElementById('mysubmit').disabled = false;
    document.forms[0].action = "new_signup_credit_card_send.asp";
  }
  else if(f.tcagree.checked == false) {
  document.getElementById('mysubmit').disabled = true;
   alert('You must agree to the Terms and Conditions');
  }
}