function mensaje(URL){   
   window.open(URL,"formulario","width=300, height=225, scrollbars=yes, top=50 left=50 menubar=no, location=no, resizable=no") 
}

function noticia(URL){   
   window.open(URL,"formulario","width=450, height=300, scrollbars=yes, top=50 left=50 menubar=no, location=no, resizable=no") 
}