function check_date(date) { if (browserOK) {
if (date.length<10) { return false; }
var chr="", d="", m="", y="";
for (var i=0;i<date.length;i++) {
chr=date.charAt(i);
if ((chr<"0")||(chr>"9")||(i==2)||(i==5)) {if (!(chr==".")) { return false;}}
if (i<2) { d+=chr; }
else {
if ((i>2)&&(i<5)) { m+=chr; }
else {
if (i>5) { y+=chr; }
}}}
if ((d<"01")||(d>"31")) { return false; }
if ((m<"01")||(m>"12")) { return false; }   
if ((y<"1985")||(y>"2035")) { return false; }
return true; }}

function ncheck(position) { if (browserOK) {
chkchar = new Array("0","1","2","3","4","5","6","7","8","9");
var string = document.vcard.elements[position].value;
for (var posS=0; posS<string.length; posS++) {
var chr = string.charAt(posS); var merk = false;
for (var posA=0; posA<chkchar.length; posA++) { if (chr == chkchar[posA]) { merk = true; } }
if (!merk) return merk; }
return merk; }}

function kcheck(position) { if (browserOK) {
chkchar = new Array("0","1","2","3","4","5","6","7","8","9",".","-"," ","/","+","(",")");
var string = document.vcard.elements[position].value;
for (var posS=0; posS<string.length; posS++) {
var chr = string.charAt(posS); var merk = false;
for (var posA=0; posA<chkchar.length; posA++) { if (chr == chkchar[posA]) { merk = true; } }
if (!merk) return merk; } 
return merk; }}

function Delete() { if (browserOK) {
if (confirm("Sollen wirklich alle Eingaben gel"+"\u00F6"+"scht werden?")) { return true; } 
else { return false; }}}

function entw_status(true_false) { if (browserOK) {
if (!true_false) { alert("Programm in Entwicklung:\nNutzung derzeit noch nicht m"+"\u00F6"+"glich!"); }
var ret_value = (true_false) ? true : false;
return ret_value; }}

function newsletter() { if (browserOK) {
if (document.vcard.newsl[0].checked) { document.vcard.newsletter.value = "0"; } 
else { document.vcard.newsletter.value = "1"; }}}
  
function testver(ns_file,msie_file) { if (browserOK) {
var msie_file1 = msie_file;
if ((ret_client()==1)&&(ret_bversion()<=4)) { document.vcard1._body_err_.value = ns_file; } 
else { document.vcard1._body_err_.value = msie_file1; }}}

function testver1(ns_file,msie_file) { if (browserOK) {
var msie_file1 = msie_file;
if ((ret_client()==1)&&(ret_bversion()<=4)) { document.vcard._body_err_.value = ns_file; } 
else { document.vcard._body_err_.value = msie_file1; }}}