function languagecheck() {
var text = window.location.href;
var pattern = new RegExp(/L=1/);

if (pattern.exec(text)){
document.write('<br><a href="javascript:history.go(-1)"><< Go Back</a>');
}
else{
document.write('<br><a href="javascript:history.go(-1)"><< Ga Terug</a>'); 
}

}