function PlaceTitel(titel,breedte,hoogte,kleur,grootte,pagina){
document.write('');
}
function PlaceHeader(aantal, pad, titel){
document.write('');
}
function PlaceSeizoen(aantal, titel, maand){
document.write('');
}
function PlaceReferentie(fotos){
return('');
}
var browser_name = navigator.appName;
var browser_version = parseFloat(navigator.appVersion);
if ((browser_name == "Netscape" && browser_version >= 3.0)||(browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0)) { roll = 'true'; }
else { roll = 'false'; }
if (roll=='true') {
img_loc = new Array()
img_loc[0] = "/img/nav_welkom_off.gif";
img_loc[1] = "/img/nav_welkom_over.gif";
img_loc[2] = "/img/nav_overpape_off.gif";
img_loc[3] = "/img/nav_overpape_over.gif";
img_loc[4] = "/img/nav_watdoenwij_off.gif";
img_loc[5] = "/img/nav_watdoenwij_over.gif";
img_loc[6] = "/img/nav_projecten_off.gif";
img_loc[7] = "/img/nav_projecten_over.gif";
img_loc[8] = "/img/nav_contact_off.gif";
img_loc[9] = "/img/nav_contact_over.gif";
// aanpassen voor highlight
img_name = new Array();
img_name[0] = "welkom";
img_name[1] = "overpape";
img_name[2] = "watdoenwij";
img_name[3] = "projecten";
img_name[4] = "contact";
img = new Array()
for (var i = 0; i < img_loc.length; i++){
img[i] = new Image()
img[i].src = img_loc[i]
}
}
function swap(imgname,imgnum) {
if (roll =='true' && picked_name != imgname)
{
document.images[imgname].src= img[imgnum].src;
}
}
function checkEmail(str) {
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(str)){
return true;
} else {
return false;
}
}
function verzenden() {
if(document.forms.myform.naam.value=='') {
alert("Alle verplichte velden (met een *) invullen a.u.b.");
document.forms.myform.naam.focus();
return false;
} else if(document.forms.myform.telefoon.value=='') {
alert("Alle verplichte velden (met een *) invullen a.u.b.");
document.forms.myform.telefoon.focus();
return false;
} else if(!checkEmail(document.forms.myform.email.value)) {
alert("Vul een geldig e-mail adres in a.u.b.");
document.forms.myform.email.focus();
return false;
} else {
return true;
}
}