function checkform(form) {
    // ** START **
  //** Required Fileds **
//      RunnerFullName
//      Address1
//     City
//      State
//      Zipcode
//      Email
//      Gender
//      DOB
 //     Age
  //    Release - this is a check box

// Build array for Check Box
    var c_Field=new Array();
    c_Field[0] = "Release";

    if (form.elements[c_Field[0]].checked == false) {
        alert("Please Verify the Consent & Release Statement.");
        return false;
     }

 // Build array for text fields
  var t_Field=new Array();
  t_Field[0] = "RunnerFullName";
  t_Field[1] = "Address1";
  t_Field[2] = "City";
  t_Field[3] = "State";
  t_Field[4] = "Zipcode";
  t_Field[5] = "Email";
  t_Field[6] = "Gender";
  t_Field[7] = "DOB";
  t_Field[8] = "Age";
  t_Field[9] = "GOTR";

  var reason = "";
  var i;

  for  (i = 0; i < 10; i++) {
      switch (i) {
          case 5:
              reason += validateEmail(form.elements[t_Field[i]]);
              break;
          case 4:
          case 8:
              reason += validateNumber(form.elements[t_Field[i]]);
              break;
          case 9:
              reason += validateDrop(form.elements[t_Field[i]]);
              break;
          default:
              reason += validateEmpty(form.elements[t_Field[i]]);
      }
  }
//  reason += validateUsername(theForm.username);
//  reason += validatePassword(theForm.pwd);
//  reason += validatePhone(theForm.phone);

  if (reason != "") {
      alert("Some fields need correction:\n" + reason);
      return false;
  }

  return true;
}

function validateEmpty(fld) {
 var error = "";

 if (fld.value.length == 0) {
     fld.style.background = 'Yellow';
     error = "The required field '" + fld.name + "' has not been filled in.\n"
 } else {
     fld.style.background = 'White';
 }
 return error;
}

function validateDrop(fld) {
    var error = "";

    if (fld.value.length == 0) {
        fld.style.background = 'Yellow';
        error = "The required field 'Girls on the Run' has not been filled in.\n"
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validateUsername(fld) {
    var error = "";
    var illegalChars = /\W/; // allow letters, numbers, and underscores

    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "You didn't enter a username.\n";
    } else if ((fld.value.length < 5) || (fld.value.length > 15)) {
        fld.style.background = 'Yellow';
        error = "The username is the wrong length.\n";
    } else if (illegalChars.test(fld.value)) {
        fld.style.background = 'Yellow';
        error = "The username contains illegal characters.\n";
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePassword(fld) {
    var error = "";
    var illegalChars = /[\W_]/; // allow only letters and numbers 

    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "You didn't enter a password.\n";
    } else if ((fld.value.length < 7) || (fld.value.length > 15)) {
        error = "The password is the wrong length. \n";
        fld.style.background = 'Yellow';
    } else if (illegalChars.test(fld.value)) {
        error = "The password contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!((fld.value.search(/[a-z]+/)) && (fld.value.search(/(0-9)+/)))) {
        error = "The password must contain at least one numeral.\n";
        fld.style.background = 'Yellow';
    } else {
        fld.style.background = 'White';
    }
    return error;
}

function trim(s) {
    return s.replace(/^\s+|\s+$/, '');
}

function validateEmail(fld) {
    var error = "";
    var tfld = trim(fld.value);                        // value of field with whitespace trimmed off
    var emailFilter = /^[^@]+@[^@.]+\.[^@]*\w\w$/;
    var illegalChars = /[\(\)\<\>\,\;\:\\\"\[\]]/;

    if (fld.value == "") {
        fld.style.background = 'Yellow';
        error = "You didn't enter an email address.\n";
    } 
    else if (!emailFilter.test(tfld)) {              //test email for illegal characters
        fld.style.background = 'Yellow';
        error = "Please enter a valid email address.\n";
    } 
    else if (fld.value.match(illegalChars)) {
        fld.style.background = 'Yellow';
        error = "The email address contains illegal characters.\n";
    } 
    else {
        fld.style.background = 'White';
    }
    return error;
}

function validatePhone(fld) {
    var error = "";
    var stripped = fld.value.replace(/[\(\)\.\-\ ]/g, '');

    if (fld.value == "") {
        error = "You didn't enter a phone number.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(parseInt(stripped))) {
        error = "The phone number contains illegal characters.\n";
        fld.style.background = 'Yellow';
    } else if (!(stripped.length == 10)) {
        error = "The phone number is the wrong length. Make sure you included an area code.\n";
        fld.style.background = 'Yellow';
    }
    return error;
}

function validateNumber(fld) {
    var error = "";

    if (fld.value == "") {
        error = "You didn't enter the runners '"+ fld.name +"'.\n";
        fld.style.background = 'Yellow';
    } else if (isNaN(fld.value)) {
        error = "The '"+  fld.name +"' field contains illegal characters.\n";
        fld.style.background = 'Yellow';
    }
    return error;
}

function validateDate(fld) {
    var error = "";

    if (fld.value == "") {
        error = "You didn't enter the runners '" + fld.name + "'.\n";
        fld.style.background = 'Yellow';
    } else if (Date(fld.value)) {
        error = "The '" + fld.name + "' field contains illegal characters.\n";
        fld.style.background = 'Yellow';
    }
    return error;
}