var path = "ftp://ftp.nodc.noaa.gov/pub/data.nodc/woa/HISTORY";

function processData(form) {

   for ( var i = 0; i < form.Details.length; i++ ){
          if (form.Details[i].checked){
          break;
          }
   }

          var ref = form.Details[i].value;
              url = path+ref;
          location = url;
}

function processInfo(form) {

   for ( var j = 0; j < form.CruiseInfo.length; j++ ){
      if (form.CruiseInfo[j].checked){
          break;
      }
   }
          location = form.CruiseInfo[j].value;

}