public function eliminarcursoajaxAction()
 {
     $curso = new Application_Model_Cursos();
     if ($this->getRequest()->isXmlHttpRequest()) {
         $this->_helper->layout->disableLayout();
         $this->_helper->viewRenderer->setNoRender();
         $idcurso = $this->getRequest()->getParam('cur');
         $curso->deleteCurso($idcurso);
         echo "1";
     }
 }