function fireClickOnEnter(btnId, e)
{
    var keynum;

    if(window.event) // IE
    {
        keynum = e.keyCode;
    }
    else
    {
        if(e.which) // Netscape/Firefox/Opera
        {
          keynum = e.which;
        }
     }
    
    if(keynum == 13) // Enter
    {
        document.getElementById(btnId).click();
        return !1;
    }
}