function show_submenu(id) {
	document.getElementById('submenu_'+id).style.display = 'block';
}

function change_photo(foto, id) {
	document.getElementById('distribucion_image_'+id).style.backgroundImage = 'url(img/distribucion/'+foto+'.jpg)';
}

function check_contact_form() {
	
	document.contact_form.submit();
	
}

function hide_alert() {
	document.getElementById('form_sended').style.display = 'none';	
}