function detect()
{
framesetpage="http://www.schildervakantie.com";
thispage=window.location.href;
if (thispage.indexOf('://')<0) {thispage="://"+thispage;};
prefix=thispage.substring(0,thispage.lastIndexOf('://'));
suffix=thispage.substring(thispage.lastIndexOf('://')+3,thispage.length);
// alert('the subpage is:['+prefix+']['+suffix+']');
if (parent.location.href==window.location.href) {parent.location.href=framesetpage+"?"+prefix+"&&&"+suffix};
}

function dutch() {
parent.leftFrame.location='nl_menu.html';
parent.mainFrame.location='nl_home.html';
} 
function english() {
parent.leftFrame.location='en_menu.html';
parent.mainFrame.location='en_home.html';
} 
function french() {
parent.leftFrame.location='fr_menu.html';
parent.mainFrame.location='fr_home.html';
} 
function german() {
parent.leftFrame.location='ge_menu.html';
parent.mainFrame.location='ge_home.html';
}