function Validate(subjectId, textareaId, submitId, plzCompletePhrase, msgTooLongPhrase, allowedCharPhrase, currCharPhrase) {
	var maxchars = 65535;
	var subjectDom = GetElementById(subjectId);
	var textareaDom = GetElementById(textareaId);
	var submitDom = GetElementById(submitId);
	if (textareaDom.value == "" || subjectDom.value == "") {
		if (plzCompletePhrase == null) {
			plzCompletePhrase = "Please complete the subject and message fields.";
		}
		alert(plzCompletePhrase);
		return false;
	}
	if (maxchars != 0) {
		if (textareaDom.value.length > maxchars) {
			if (msgTooLongPhrase == null) {
				msgTooLongPhrase = "Your message is too long.";
			}
			if (allowedCharPhrase == null) {
				allowedCharPhrase = "Allowed max chars length: ";
			}
			if (currCharPhrase == null) {
				currCharPhrase = "Current chars length: ";
			}
			alert(msgTooLongPhrase + "\n\n" + allowedCharPhrase + maxchars + "\n" + currCharPhrase + textareaDom.value.length + "");
			textareaDom.focus();
			return false;
		} else {
			submitDom.disabled = true;
			return true;
		}
	} else {
		submitDom.disabled = true;
		return true;
	}
}

var form = "";
var submitted = false;
var error = false;
var error_message = "";

function check_input(field_name, field_size, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == '' || field_value.length < field_size) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}
function validate_email(field_name, message)
{
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

apos=field_value.indexOf("@")
dotpos=field_value.lastIndexOf(".")
if (apos<1||dotpos-apos<2) {
error_message = error_message + "* " + message + "\n";
error = true;
}
}
}
function check_radio(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].checked == true) {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "* " + message + "\n";
      error = true;
    }
  }
}


function check_form(form_name) {
  if (submitted == true) {
    alert("This form has already been submitted. Please press Ok and wait for this process to be completed.");
    return false;
  }
  error = false;
  form = form_name;
  error_message = "Errors have occured during the process of your form.\n\nPlease make the following corrections:\n\n";

  check_input("name", 3, "Please enter your real name.");
  check_input("phone", 5, "Please enter your phone number.");
  check_input("email", 5, "Please enter your e-mail address.");
  validate_email("email", "Please enter a valid e-mail address.");


  if (error == true) {
    alert(error_message);
    return false;
  } else {
    submitted = true;
    return true;
  }
}