/////////////////////////////////////////////////////////////////////////////////
// Password checker
/////////////////////////////////////////////////////////////////////////////////
function isPass(pass1,pass2)
{
	var invalid = " "; // Invalid character is a space.
	var minLength = 4; // Minimum length.
	
	// Check for a value in both fields.
	if (pass1.value == '') {
		alert("Gelieve een paswoord in te vullen.");
		pass1.select();
		return true;
	}
	// Check for minimum length
	if (pass1.value.length < minLength)
	{
		alert("Je paswoord moet minimum " + minLength + " karakters lang zijn.");
		pass1.select();
		return true;
	}
	
	// Check for spaces.
	if (pass1.value.indexOf(invalid) > -1) {
		alert("Spaties zijn niet toegelaten.");
		pass1.select();
		return true;
	}
	
	if (pass1.value != pass2.value) {
		alert ("De bevestiging van je paswoord is niet correct.");
		pass2.select();
		return true;
	}

return false;
}

/////////////////////////////////////////////////////////////////////////////////
// ConfirmLink
/////////////////////////////////////////////////////////////////////////////////
function confirmLink(theLink, confirmMsg)
{
	var is_confirmed = confirm(confirmMsg);
	if (is_confirmed) {
		//theLink.href += '&is_js_confirmed=1';
		theLink.href;
	}
	return is_confirmed;
}

/////////////////////////////////////////////////////////////////////////////////
// Check if string is empty
/////////////////////////////////////////////////////////////////////////////////
function isEmpty(theString)
{
	for (var i=0; i < theString.length; i++)
	{
		var ch = theString.substring(i,i+1);
		if (ch != " " && ch != "\t" && ch != "\n" && ch != "\r")
			return false;
	}
	return true;
}

/////////////////////////////////////////////////////////////////////////////////
// Email checker
/////////////////////////////////////////////////////////////////////////////////
function isEmail (emailStr)
{
	var checkTLD=1;
	var knownDomsPat=/^(com|net|be|nl|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 true;
	}
	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 true;
	   }
	}
	for (i=0; i<domain.length; i++) {
		if (domain.charCodeAt(i)>127) {
			//alert("Ths domain name contains invalid characters.");
			return true;
		}
	}

	if (user.match(userPat)==null) {
		//alert("The username does not seem to be valid.");
		return true;
	}
	
	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 true;
			}
		}
	return false;
	}
	
	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 true;
	   }
	}

	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 true;
	}

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

return false;
}
/////////////////////////////////////////////////////////////////////////////////
// Display an error and set focus to formfield in error
/////////////////////////////////////////////////////////////////////////////////
function errorField (objElem, txtMsg)
{
	if (objElem != null)
		objElem.select();
	alert (txtMsg);
}