function change_localisation(form_type, app){
	localisation = document.getElementById('url');

	if((form_type.value == 1) || (form_type.value == 2)){
		localisation.value = app;
		localisation.readOnly = true;
	}
	else{
		localisation.value = 'http://';
		localisation.readOnly = false;
	}
}