// JavaScript Document
function intro(){
window.open('../intro.htm','intro','status=no,toolbar=no,location=no,scrollbars=no,menu=no,width=500,height=550,resizable=no');
}
// printen van pagina
function printWindow() {
bV = parseInt(navigator.appVersion);
if (bV >= 4) window.print();
}
// openenen van foto in window
function show_pic(imagesrc,winwidth,winheight){
var look='top=100,left=100,width='+winwidth+',height='+winheight+','
popwin=window.open("","",look)
popwin.document.open()
popwin.document.write('SEC-CONSTRUCTION - Click on picture to close
')
popwin.document.close()
}
function isEmail(email){
var pattern=/(^[\-_\.a-zA-Z0-9]+)@((([0-9]{1,3}\.){3}([0-9]{1,3})((:[0-9])*))|(([a-zA-Z0-9\-]+)(\.[a-zA-Z]{2,})+(\.[a-zA-Z]{2})?((:[0-9])*)))/;
if (email.search(pattern) == -1) {return false;}
else {return true};
}
function doSubmit() {
var formElem = document.formulier;
if (formElem.naam.value == '' || formElem.email.value == '' ) {alert("Please fill your name and email.")}
else if (formElem.email.value && (!isEmail(formElem.email.value))) {alert("Please give a valid email-address.")}
else {formElem.submit()}
}