function ocultarMostrarPorId(id){
    var estado=document.getElementById(id).style.display;
    if(estado == 'none'){
        document.getElementById(id).style.display='';
    }else{
        document.getElementById(id).style.display='none';
    }
}

function levantarPopUp(url){
    //"toolbar='yes',location='no',status='no',menubar='no',scrollbars='yes',resizable='no',width='800',height='600'"
    window.open(url,"_blank","toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=1, resizable=1, width=800, height=400");
}