function ajaxtypeklant(type,tempreg) {
 new Ajax.Updater('registerform', 'showRegisterForm',{ parameters:'typec='+ encodeURIComponent(type) + '&temp='+ encodeURIComponent(tempreg) });
}
function ajaxhobbyof_beroep(value,scriptname) {
new Ajax.Updater('endofform', scriptname,{
parameters:'hobbyberoep='+ encodeURIComponent(value) });
}
function ajaxtypeklant(type,tempreg) {
 new Ajax.Updater('registerform', 'showRegisterForm',{ parameters:'typec='+ encodeURIComponent(type) + '&temp='+ encodeURIComponent(tempreg) });
}
function ajaxhobbyof_beroep(value,scriptname) {
new Ajax.Updater('endofform', scriptname,{
parameters:'hobbyberoep='+ encodeURIComponent(value) });
}
function lettersonly(myfield, e, dec) {
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;
// letters
else if ((("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ").indexOf(keychar) > -1))
   return true;
else
   return false;
}