function Blocker( target )
{
    system.addEventListener("onloadSystem", activate);
    
    function activate()
    {
        try
        {
            document.body.onmousedown = block;
            document.body.onselectstart = block;
        }
        catch( e )
        {
        }
    }
    
    function block()
    {
        return false;
    }
}