var form_name = 'form_idioma';
var div_name = 'presentacion';


function getFormByName(formulario) {
	var listaforms = document.forms;
	for (var i=0; i<listaforms.length; i++) {
		if (listaforms[i].name == formulario) {
			return listaforms[i];
		}
	}
	return false;
}

function submitAsyncForm() {
	var form = getFormByName(form_name);
	var callback =
	{
		success: rsSubmitForm,
		failure: rfSubmitForm
	};
	YAHOO.util.Connect.setForm(form);
	var transaction = YAHOO.util.Connect.asyncRequest('GET', form.action, callback);
}

function rsSubmitForm(o) {
	var textIdioma = o.responseText;
	var divContent = document.getElementById(div_name);
	divContent.innerHTML = o.responseText;
	return false;
}

var rfSubmitForm = function(o){
	return false;
}