function montrecache(id) {
	var obj = document.getElementById(id);
	var obj_suite = document.getElementById(id+"_suite");
	if (obj) {
	 if (obj.style.display == "none")
	     {
		 obj.style.display = "";
	     obj_suite.style.display = "none";
		 }
	  else
		 {
	     obj.style.display = "none";
	     obj_suite.style.display = "";
		 }
	}
}

function validation_email(form) {

	var email = form.email.value;

	if (email.search(/^[_a-z0-9-]+(.[_a-z0-9-]+)*[^._-]@[a-z0-9-]+(.[a-z0-9]{2,4})*$/) == -1)
	{
	alert ('Adresse Email non valide');
	form.email.focus();
	return false;
	}
 
	else
	{
	return true;
	}

}