<!-- pruzi.com web solutions: JavaScripts für Checks

// ------------------------------------------------------------------------------------------

function CheckGebDatum (gebdatumObj)
{

/* Diese Funktion checkt ein Geburtsdatum auf Plausibilität.
Es muss ein gültiger Tag sein, es darf nicht größer als heute sein,
darf nicht älter als 110 Jahre sein. */

var f = gebdatumObj;
gebdatum = f.value;

if (gebdatum.length != 10)
	{
	alert("Das Geburtsdatum muss 10 Stellen lang sein.");
	f.select();
	f.focus();
	return false;
}

if (gebdatum.substr(2,1) != "." || gebdatum.substr(5,1) != ".")
	{
	alert("An der dritten und sechsten Stelle des Geburtsdatums muss ein Punkt sein.");
	f.select();
	f.focus();
	return false;	
}

var tt = gebdatum.substr(0,2);
var mm = gebdatum.substr(3,2);
var jjjj = gebdatum.substr(6,4);
var now = new Date();

if((isNaN(tt) == true) || (isNaN(mm) == true) || (isNaN(jjjj) == true))
{
	alert("Tag, Monat, Jahr des Geburtsdatums muss eine Zahl sein.");
	f.select();
	f.focus();
	return false;	
}
	
if (tt < 1 || tt > 31)
	{
	alert("Der Tag scheint nicht korrekt zu sein.");
	f.select();
	f.focus();
	return false;	
}

if (mm < 1 || mm > 12)
	{
	alert("Der Monat scheint nicht korrekt zu sein.");
	f.select();
	f.focus();
	return false;	
}

if (jjjj < now.getFullYear() - 110 || jjjj > now.getFullYear())
	{
	alert("Das Geburtsjahr scheint nicht korrekt zu sein.");
	f.select();
	f.focus();
	return false;	
}

return true;
}


// ------------------------------------------------------------------------------------------

function CheckPWD (PWDObj, PWDCFMObj, ZeichenInt)
{

/* Diese Funktion checkt die Übereinstimmung von PWD und Bestätigung sowie die Länge. */

var f = PWDObj;
var f2 = PWDCFMObj;
var pwd = f.value;
var pwdcfm = f2.value;
			
if (pwd.length < ZeichenInt)
{
	alert("Das Kennwort muss mindestens " + ZeichenInt + " Zeichen lang sein.");
	f.select();
	f.focus();
	return false;
}

if (pwd != pwdcfm)
{
	alert("Die Kennwort-Bestätigung stimmt nicht mit dem Kennwort überein.");
	f2.select();
	f2.focus();
	return false;
}

return true;
}

// ------------------------------------------------------------------------------------------

function CheckEmail (emailStr)
{

/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|ad|al|as|ao|aq|ar|aw|at|bs|bd|be|bj|by|ba|bv|io|bg|bi|kh|ca|ky|td|cn|cc|km|ck|hr|cy|dk|do|ec|sv|ee|fk|fj|fr|tf|gm|de|gi|gr|gd|gu|gn|gy|ht|hn|hu|in|ir|ie|it|jm|jo|ke|ki|kr|la|lb|lr|li|lu|mg|my|ml|mh|mr|mx|md|mn|ma|mm|nr|an|nt|nz|ne|nu|mp|om|pw|pg|pe|pn|pf|pr|re|ru|lc|sm|sn|sl|si|so|su|lk|pm|vc|sr|sz|ch|tj|tz|tg|to|tn|tm|tv|ua|uk|uy|uz|va|vn|vi|eh|yu|zm|af|dz|ad|ai|ag|am|au|az|bh|bb|bz|bm|bo|bw|br|bn|bf|bt|cm|cv|cf|cl|cx|co|cg|cr|cu|cs|dj|tp|eg|gq|et|fo|fi|fx|ga|ge|gh|gb|gl|gp|gt|gw|gf|hm|hk|is|id|iq|il|ci|jp|kz|kg|kp|kw|lv|ls|ly|lt|mo|mw|mv|mt|mq|mu|fm|mc|ms|mz|na|np|nl|nc|ni|ng|nf|no|pk|pa|py|ph|pl|pt|qa|ro|rw|ws|sa|sc|sg|sb|za|es|sh|st|sd|sj|se|sy|tw|th|tk|tt|tr|tc|ug|ae|us|um|vu|ve|vg|wf|ye|zr|zw|cz|sk)$/;

/* The following pattern is used to check if the entered e-mail address
fits the user@domain format.  It also is used to separate the username
from the domain. */

var emailPat=/^(.+)@(.+)$/;

/* The following string represents the pattern for matching all special
characters.  We don't want to allow special characters in the address. 
These characters include ( ) < > @ , ; : \ " . [ ] */

var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

/* The following string represents the range of characters allowed in a 
username or domainname.  It really states which chars aren't allowed.*/

var validChars="\[^\\s" + specialChars + "\]";

/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */

var quotedUser="(\"[^\"]*\")";

/* The following pattern applies for domains that are IP addresses,
rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

/* The following string represents an atom (basically a series of non-special characters.) */

var atom=validChars + '+';

/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */

var word="(" + atom + "|" + quotedUser + ")";

// The following pattern describes the structure of the user

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

/* Finally, let's start trying to figure out if the supplied address is valid. */

/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */

var matchArray=emailStr.match(emailPat);

if (matchArray==null) {

/* Too many/few @'s or something; basically, this address doesn't
even fit the general mould of a valid e-mail address. */

//alert("Ungültige Email-Adresse (pr&uuml;fen Sie @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
//alert("Ungültige Zeichen im Usernamen.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
//alert("Ungültige Zeichen im Domänennamen.");
return false;
   }
}

// See if "user" is valid 

if (user.match(userPat)==null) {

// user is not valid

//alert("Name ungültig.");
return false;
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
//alert(" IP Address ungültig!");
return false;
   }
}
return true;
}

// Domain is symbolic name.  Check if it's valid.
 
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("Ungültige Domäne.");
return false;
   }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
//alert("Ungültige TLD oder Land .");
return false;
}

// Make sure there's a host name preceding the domain.

if (len<2) {
//alert("Kein Host angegeben!");
return false;
}

// If we've gotten this far, everything's valid!
return true;
}

//  End -->

// ------------------------------------------------------------------------------------------

function keinPunkt(t)
{

	if (t.value.indexOf(".") != -1) t.value = t.value.replace(".", ""); 	//Punkt wegwerfen
}

// ------------------------------------------------------------------------------------------

function nurZahl(t,min,max)
{
	if (t.value.length == 0)
		return false;

	var chars = "0123456789";

	for (var Pos = 0; Pos < t.value.length; Pos++)
	{
		if (chars.indexOf(t.value.charAt(Pos)) == -1)
		{
			t.select();
			t.focus();
 			return false;
		}
	}
	
	if (t.value < min)
	{
		t.select();
		t.focus();
 		return false;
	}
	
	if (t.value > max)
	{
		t.select();
		t.focus();
 		return false;
	}
	
	return true;
}

// ------------------------------------------------------------------------------------------

function chkDate(t)
{
	var txt = "";
	var dat = t.value;
	
	if (dat.length != 10)
	{
		t.select();
		t.focus();
		return false;
	}
	
	if (dat.substr(2,1) != "." || dat.substr(5,1) != ".")
	{
		t.select();
		t.focus();
		return false;	
	}
	
	var tt = dat.substr(0,2);
	var mm = dat.substr(3,2);
	var jjjj = dat.substr(6,4);
	
	if((isNaN(tt) == true) || (isNaN(mm) == true) || (isNaN(jjjj) == true))
	{
		t.select();
		t.focus();
		return false;	
	}
	
	if (tt < 1 || tt > 31)
	{
		t.select();
		t.focus();
		return false;	
	}
	
	if (mm < 1 || mm > 12)
	{
		t.select();
		t.focus();
		return false;	
	}
	
	//If you need to know whether the date is in the past or in the future, continue by getting today's date in milliseconds. (Why milliseconds? Because it's easiest to calculate).

	var now = new Date();
	now = now.getTime(); //NN3

	//Then create a Date object with the date the user has filled in and read it out in milliseconds.

	var dateToCheck = new Date();
	dateToCheck.setYear(jjjj);
	dateToCheck.setMonth(mm-1);
	dateToCheck.setDate(tt);
	var checkDate = dateToCheck.getTime();

	//Now compare now and checkDate. If the first one is smaller than the second one the entered date is in the future, if it's larger it's in the past.

	var auswertung = (checkDate - now);

	if (auswertung < 0)
	{
		t.select();
		t.focus();
		return false;	
	}

	return true;
}