function valbutton(thisform) {
  myOption = -1;
  for (i=thisform.myradiobutton.length-1; i > -1; i--) {
    if (thisform.myradiobutton[i].checked) { 
      myOption = i; i = -1;
    } 
  } 
  if (myOption == -1) { 
    alert("Please select Yes to proceed to download area");
    return false;
  }
  else {
    location.href = "http://secure.softwarekey.com/solo/products/b1_cart.asp?action=add&T=5522" 
  }
}