function validateOnSubmit(type) {
    var elem;
    var errs=0;
	var formObj = document.forms.form1;

    // execute in reverse order, so focus gets
    // set to the first one in error.

    if(type=='samples') {
    	// Validate fields common for samples form

		if (!validatePresent(formObj.postal_code, 'inf_postal_code', true )) errs += 1;
		if (!validatePresent(formObj.state_province_locality, 'inf_state_province_locality', true )) errs += 1;
		if (!validatePresent(formObj.country_region, 'inf_country_region', true )) errs += 1;
		if (!validatePresent(formObj.city, 'inf_city', true )) errs += 1;
		if (!validatePresent(formObj.address, 'inf_address', true )) errs += 1;
		if (!validateTelnr(formObj.phone, 'inf_phone', true )) errs += 1;
		if (!validatePresent(formObj.company, 'inf_company', true )) errs += 1;

		// which sample items checked?
		var is_sample_unifit 	= getCheckedValue(formObj.sample_unifit);
		var is_sample_perfit 	= getCheckedValue(formObj.sample_perfit);
		var is_sample_peds 		= getCheckedValue(formObj.sample_peds);
		var is_sample_tape 		= getCheckedValue(formObj.sample_tape);
		var samples = is_sample_unifit + is_sample_perfit + is_sample_peds + is_sample_tape;
		if (!samples.length > 0) {
			msg ("info_samples", "notice", "Please select at least one:");
			errs += 1;
			} else {
			msg ("info_samples", "notice", "");
		}
    }

	// validate fields common to both forms
	if (!validateEmail(formObj.email, 'inf_email', true )) errs += 1;
	if (!validatePresent(formObj.title, 'inf_title', true )) errs += 1;
	if (!validatePresent(formObj.last_name, 'inf_last_name', true )) errs += 1;
	if (!validatePresent(formObj.first_name, 'inf_first_name', true )) errs += 1;

	var errmessage ="";
	    if (errs>1)  errmessage ="There are " + errs + " fields which need attention before sending.";
	    if (errs==1) errmessage ="There is a field which needs attention before sending.";
	    if (errs>=1)  errmessage +="\nPlease review notices in the form and try again.";
		if (errs>0) {
			alert(errmessage);
		}

	    return (errs==0);
}



function objectShow(objectID, boolShow) {
		var theObject = document.getElementById(objectID);
		if (theObject) {
			if (boolShow == true) {
				theObject.style.display='block';
			} else if (boolShow == 0) {
				theObject.style.display='none';
			}
		}
}

// ----------------------------------------------------------------------
// Javascript form validation routines.
// Author: Stephen Poley
//
// Simple routines to quickly pick up obvious typos.
// All validation routines return true if executed by an older browser:
// in this case validation must be left to the server.
// ----------------------------------------------------------------------

var nbsp = 160;		// non-breaking space char
var node_text = 3;	// DOM text node-type
var emptyString = /^\s*$/ ;
var global_valfield;	// retain valfield for timer thread

// --------------------------------------------
//                  trim
// Trim leading/trailing whitespace off string
// --------------------------------------------

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


// --------------------------------------------
//                  setfocus
// Delayed focus setting to get around IE bug
// --------------------------------------------

function setFocusDelayed()
{
  global_valfield.focus();
}

function setfocus(valfield)
{
  // save valfield in global variable so value retained when routine exits
  global_valfield = valfield;
  setTimeout( 'setFocusDelayed()', 100 );
}


// --------------------------------------------
//                  msg
// Display warn/error message in HTML element.
// commonCheck routine must have previously been called
// --------------------------------------------

function msg(fld,     // id of element to display message in
             msgtype, // class to give element ("warn" or "error")
             message) // string to display
{
  // setting an empty string can give problems if later set to a
  // non-empty string, so ensure a space present. (For Mozilla and Opera one could
  // simply use a space, but IE demands something more, like a non-breaking space.)
  var dispmessage;
  if (emptyString.test(message))
    dispmessage = String.fromCharCode(nbsp);
  else
    dispmessage = message;

  var elem = document.getElementById(fld);
  elem.firstChild.nodeValue = dispmessage;

  elem.className = msgtype;   // set the CSS class to adjust appearance of message
}

// --------------------------------------------
//            commonCheck
// Common code for all validation routines to:
// (a) check for older / less-equipped browsers
// (b) check if empty fields are required
// Returns true (validation passed),
//         false (validation failed) or
//         proceed (don't know yet)
// --------------------------------------------

var proceed = 2;

function commonCheck    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  if (!document.getElementById)
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  // not available on this browser
  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node

  if (emptyString.test(valfield.value)) {
    if (required) {
      msg (infofield, "error", "Required");
      setfocus(valfield);
      return false;
    }
    else {
      msg (infofield, "notice", "");   // OK
      return true;
    }
  }
  return proceed;
}

// --------------------------------------------
//            validatePresent
// Validate if something has been entered
// Returns true if so
// --------------------------------------------

function validatePresent(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{
  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;

  msg (infofield, "notice", "");
  return true;
}

// --------------------------------------------
//               validateEmail
// Validate if e-mail address
// Returns true if so (and also if could not be executed because of old browser)
// --------------------------------------------

function validateEmail  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/  ;
  if (!email.test(tfld)) {
    msg (infofield, "error", "Not a valid e-mail address");
    setfocus(valfield);
    return false;
  }

  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/  ;
  if (!email2.test(tfld))
    msg (infofield, "warn", "Unusual e-mail address - check if correct");
  else
    msg (infofield, "notice", "");
  return true;
}


// --------------------------------------------
//            validateTelnr
// Validate telephone number
// Returns true if so (and also if could not be executed because of old browser)
// Permits spaces, hyphens, brackets and leading +
// --------------------------------------------

function validateTelnr  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var telnr = /^\+?[0-9 ().-]+[0-9]$/  ;
  if (!telnr.test(tfld)) {
    msg (infofield, "error", "Not a valid telephone number. Characters permitted are digits, space ()- and leading +");
    setfocus(valfield);
    return false;
  }

  var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++;

  if (numdigits<6) {
    msg (infofield, "error", "Error: " + numdigits + " digits - too short");
    setfocus(valfield);
    return false;
  }

  if (numdigits>14)
    msg (infofield, "warn", numdigits + " digits - check if correct");
  else {
    if (numdigits<10)
      msg (infofield, "warn", "Only " + numdigits + " digits. Please include area code.");
    else
      msg (infofield, "notice", "");
  }
  return true;
}

// --------------------------------------------
//             validateAge
// Validate person's age
// Returns true if OK
// --------------------------------------------

function validateAge    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);
  var ageRE = /^[0-9]{1,3}$/
  if (!ageRE.test(tfld)) {
    msg (infofield, "error", "Error: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>=200) {
    msg (infofield, "error", "Error: not a valid age");
    setfocus(valfield);
    return false;
  }

  if (tfld>110) msg (infofield, "warn", "Older than 110: check correct");
  else {
    if (tfld<7) msg (infofield, "warn", "Bit young for this, aren't you?");
    else        msg (infofield, "notice", "");
  }
  return true;
}


// ADDED BY TC
// ValidateZip
// Validates a zip code based on both US zip code schemes: 12345-1234 or 12345
function validateZip  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{

	var stat = commonCheck (valfield, infofield, required);
	if (stat != proceed) return stat;

	var tfld = trim(valfield.value);
	var reZip = new RegExp(/(^\d{5}$)|(^\d{5}[-|+]\d{4}$)/);
     if (!reZip.test(tfld)) {
          msg (infofield, "error", tfld + " is Not a valid US ZIP code");
          return false;
     } else {
	msg (infofield, "notice", "");
	}
	return true;
}

/**
 *
 * @access public
 * @return void
 **/
function validateRadio(radioObj,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
	var tfld = trim(getCheckedValue(radioObj));
	if (tfld=="") {
		msg (infofield, "error", "Required");
		return false;
	} else {
		msg (infofield, "notice", "");
	}
	return true;
}


function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}