/* - - - - - - - - - - - - - - - - - - - - -
Title : Form Validation
Description: Client-side validation for contribute.php page.

Created : 26/09/06
- - - - - - - - - - - - - - - - - - - - - */

function validateForm(whichform) {
  for (var i=0; i<whichform.elements.length; i++) {
    var element = whichform.elements[i];
    if (element.className.indexOf("valRequired") != -1) {
      if (!isFilled(element)) {
        alert("Please fill in the "+element.name+" field.");
        return false;
      }
    }
    if (element.className.indexOf("valEmail") != -1) {
      if (!isEmail(element)) {
        alert("Your email address is missing an @ or a .");
        return false;
      }
    }
  }
  return true;
}

function isFilled(field) {
  if (field.value.length < 1) {
    return false;
  } else {
    return true;
  }
}

function isEmail(field) {
  if (field.value.length > 0 && (field.value.indexOf("@") == -1 || field.value.indexOf(".") == -1)) {
    return false;
  } else {
    return true;
  }
}

function prepareForms() {
  for (var i=0; i<document.forms.length; i++) {
    var thisform = document.forms[i];
    thisform.onsubmit = function() {
      return validateForm(this);
    }
  }
}


addLoadEvent(prepareForms);