oas_setup = function(width)
{
    OAS_rn = '001234567890';
    OAS_rns = '1234567890';
    OAS_rn = new String (Math.random());
    OAS_rns = OAS_rn.substring (2, 11);
    var position = '4';
    if (width >= 300)
    {
        // insert position 1
        position = '1';
    }
    else if (width >= 216)
    {
        // insert position 2
        position = '2';
    }
    else if (width >= 168)
    {
        // insert position 3
        position = '3';
    }

    document.write(
        "<scr" + "ipt type=\"text/javascript\""
            + " language=\"javascript\" "
            + "src=\"http://ads.nwsource.com//RealMedia/ads/adstream_jx.ads/mobile.seattletimes.com/1" +  OAS_rns + "@Position" + position
            + "\"></script>");
}