var submitButtonId;

function valideSurEntree(idLien) {
    submitButtonId = idLien;
    document.onkeydown = touche_enfoncee;
    //alert(document.onkeydown);
}

// Gestion touche "Entree" devant executer la recherche
function touche_enfoncee(evenement) {
    var keyCode;

    //IE
    if (window.event)
        keyCode = window.event.keyCode;
    //NS - FFOX
    else
        keyCode = evenement.which;

    if (keyCode == 13) {
        if (submitButtonId != null) {            
            document.getElementById(submitButtonId).click();
            return false;
        }
    }
}