function set_search_action(form){
	var keywords=form.searched_keywords.value;
	if(keywords!='Tapez ici votre recherche'){
		keywords = keywords.replace(' ', '-');
		keywords = keywords.toLowerCase();
		form.action = form.action+keywords+',1.html';
	}else{
		form.action = '/annuaire/voyages-37,1.html';
	}
}

function clear_input(elem, default_value){
	if(elem.value == default_value)
		elem.value = '';
}

function check_filled(elem, default_value, msg){
	if(elem.value == '' || elem.value == default_value)
		alert(msg);
}