function toggle(panel)
{
    // elemente finden
    var divPopUp = document.getElementById(panel);
    
    if (divPopUp.style.visibility == 'visible')
    {
        divPopUp.style.visibility = 'hidden';
    }
    else 
    {
        divPopUp.style.visibility = 'visible';
    }
} 

function manualSubmit(e, divSubmit)
{
    var keycode;
    if (window.event) keycode = window.event.keyCode;
    else if (e) keycode = e.which;
    else return true;

    if (keycode == 13)
    {
        document.getElementById(divSubmit).click();
        return false;
    }
    else
    {
        return true;
    }
}

function hideDropDown(dropDownId) 
{
    var combo = $find(dropDownId);   
    if (combo.get_dropDownVisible()) 
    { 
       combo.hideDropDown();
    }
}