(function() {
            var randomiser = (Math.random() + 1).toString(36).substring(7);
            var adID = document.querySelector('#modsfire_com_1050x336_billboard_bottom').id = "modsfire_com_1050x336_billboard_bottom-" + randomiser;

            inView('#' + adID).once('enter', (function() {
                googletag.cmd.push(function() {
                    if(window.innerWidth > 1024) {
                        googletag.defineSlot('/23003497639/modsfire.com_1050x336_billboard_bottom_desktop', [[970,250],[728,90],[970,90],[980,300],[1100,200],[1000,200],[1000,250],[970,300],[980,240],[980,120],[970,200],[970,188],[970,120],[950,90],[728,100],[728,250]], adID).addService(googletag.pubads());        
                    } else {   
                        googletag.defineSlot('/23003497639/modsfire.com_336x336_billboard_bottom_mobile', [[336,336],[336,320],[320,336],[320,320],[300,300],[336,280],[320,250],[300,250]], adID).addService(googletag.pubads());            
                    }
                        googletag.display(adID);
                        stpd.initializeAdUnit(adID);                    
                });
            }));
        })();