I'm having a strange (likely JavaScript) related issue. I'm running Open X Ad Server ( http://www.openx.org ) which serves ads to the website http://upsidedowndogs.com . The ads load fine every time when visiting the site via Chrome, IE, or Safari, but sometimes don't load at all in FireFox - Hence, it is a client side issue, which leads me to believe its something up with the javascript.

The fact that the problem is intermittent, and does not through any error codes to FireBug, also doesn't make it any easier to diagnose and address.

Any ideas how to diagnose / address this issue?

Thanks!

Here is the code generated by OpenX (it goes in the page header - additional code is then used in each ad unit, as seen on the page)

if (typeof(OA_zones) != 'undefined') {
        var OA_zoneids = '';
        for (var zonename in OA_zones) OA_zoneids += escape(zonename+'=' + OA_zones[zonename] + "|");
        OA_zoneids += '&nz=1';
    } else {
        var OA_zoneids = escape('1|2|3|4');
    }

    if (typeof(OA_source) == 'undefined') { OA_source = ''; }
    var OA_p=location.protocol=='https:'?'https://ads.offleashmedia.com/server/www/delivery/spc.php':'http://ads.offleashmedia.com/server/www/delivery/spc.php';
    var OA_r=Math.floor(Math.random()*99999999);
    OA_output = new Array();

    var OA_spc="<"+"script type='text/javascript' ";
    OA_spc+="src='"+OA_p+"?zones="+OA_zoneids;
    OA_spc+="&amp;source="+escape(OA_source)+"&amp;r="+OA_r;
    OA_spc+=(document.charset ? '&amp;charset='+document.charset : (document.characterSet ? '&amp;charset='+document.characterSet : ''));

    if (window.location) OA_spc+="&amp;loc="+escape(window.location);
    if (document.referrer) OA_spc+="&amp;referer="+escape(document.referrer);
    OA_spc+="'><"+"/script>";
    document.write(OA_spc);

    function OA_show(name) {
        if (typeof(OA_output[name]) == 'undefined') {
            return;
        } else {
            document.write(OA_output[name]);
        }
    }

    function OA_showpop(name) {
        zones = window.OA_zones ? window.OA_zones : false;
        var zoneid = name;
        if (typeof(window.OA_zones) != 'undefined') {
            if (typeof(zones[name]) == 'undefined') {
                return;
            }
            zoneid = zones[name];
        }

        OA_p=location.protocol=='https:'?'https://ads.offleashmedia.com/server/www/delivery/apu.php':'http://ads.offleashmedia.com/server/www/delivery/apu.php';

        var OA_pop="<"+"script type='text/javascript' ";
        OA_pop+="src='"+OA_p+"?zoneid="+zoneid;
        OA_pop+="&amp;source="+escape(OA_source)+"&amp;r="+OA_r;
        if (window.location) OA_pop+="&amp;loc="+escape(window.location);
        if (document.referrer) OA_pop+="&amp;referer="+escape(document.referrer);
        OA_pop+="'><"+"/script>";

        document.write(OA_pop);
    }
var OA_fo = '';
OA_fo += "<"+"script type=\'text/javascript\' src=\'http://ads.offleashmedia.com/server/www/delivery/fl.js\'><"+"/script>\n";
document.write(OA_fo);