function returnObjById(id)
{
    var returnVar = null;
    
    if (document.getElementById)
        returnVar = document.getElementById(id);
    else if (document.all)
        returnVar = document.all[id];
    else if (document.layers)
        returnVar = document.layers[id];
        
    return returnVar;
}

function returnFileName()
{
    var file_name = document.location.href;
    var end = (file_name.indexOf("?") == -1) ? file_name.length : file_name.indexOf("?");
    return file_name.substring(file_name.lastIndexOf("/") + 1, end);
}

function redirect(uri)
{
    window.open(uri, '_self');
}
function popup(uri)
{
    window.open(uri, '_blank');
}