//Copyright 2000 Lighthouse Technologies, Inc.  All Rights Reserved.

// Fields to be verified and order to verify them in.

function emailCheck (emailStr) {

	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);

	if (matchArray==null) {
	  alert("Email address seems incorrect (check @ and .'s)");
	  return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++) {
	  if (user.charCodeAt(i)>127) {
		alert("Ths username contains invalid characters.");
		return false;
	   }
	}

	for (i=0; i<domain.length; i++) {
	  if (domain.charCodeAt(i)>127) {
		alert("Ths domain name contains invalid characters.");
		return false;
	   }
	}

	if (user.match(userPat)==null) {
	  alert("The username doesn't seem to be valid.");
	  return false;
	}

	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	  for (var i=1;i<=4;i++) {
		if (IPArray[i]>255) {
		  alert("Destination IP address is invalid!");
		  return false;
		 }
	}
	return true;
	}

	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;

	for (i=0;i<len;i++) {
	  if (domArr[i].search(atomPat)==-1) {
		alert("The domain name does not seem to be valid.");
		return false;
	   }
	}

	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	  domArr[domArr.length-1].search(knownDomsPat)==-1) {
	  alert("The address must end in a well-known domain or two letter " + "country.");
	  return false;
	}

	// Make sure there's a host name preceding the domain.

	if (len<2) {
	  alert("This address is missing a hostname!");
	  return false;
	}

	// If we've gotten this far, everything's valid!
	return true;
}

function subscribe(form2)
{
  if(!isFilled(form2.Email))
  {
		return false;
  }
  else
    if (!emailCheck(form2.Email.value))
      return false;
}

// isFilled - Is the field filled?
function isFilled(field)
{
 if (field.value !="") return true;
  else
   {
    formIsFilledWarning(field.name,field);
    return false;
   }
}

// Validation Warnings 
function formIsFilledWarning(fieldname, field)
{
  alert("MISSING REQUIRED FIELD! Please fill in the " +fieldname.substring(0,50) + " field");
  field.focus();
}

function numbersonly(myfield, e, dec)
// copyright 1999 Idocs, Inc. http://www.idocs.com
// Distribute this script freely but keep this notice in place
// EXAMPLE: onKeyPress="return numbersonly(this, event)" 
{
var key;
var keychar;

if (window.event)
   key = window.event.keyCode;
else if (e)
   key = e.which;
else
   return true;
keychar = String.fromCharCode(key);

// control keys
if ((key==null) || (key==0) || (key==8) || 
    (key==9) || (key==13) || (key==27) )
   return true;

// numbers
else if ((("0123456789.").indexOf(keychar) > -1))
   return true;

// decimal point jump
else if (dec && (keychar == "."))
   {
   myfield.form.elements[dec].focus();
   return false;
   }
else
   return false;
}