Please replace your current banner code with the following:

      <div id="aads-49"></div>

And the following script should be embedded at the end of your body tag, right before </body>:

      <script>(new function(){this.detect=function(e,a){var n=!1,r=2,t=!1,o=!1;if("function"==typeof a){e+="?ch=*&amp;rn=*";var c=11*Math.random(),i=new Image;i.onload=l,i.onerror=function(){t=!0,l()},i.src=e.replace(/\*/,1).replace(/\*/,c);var d=new Image;d.onload=l,d.onerror=function(){o=!0,l()},d.src=e.replace(/\*/,2).replace(/\*/,c),function e(a,t){0==r||1e3<t?a(0==r&&n):setTimeout(function(){e(a,2*t)},2*t)}(a,250)}function l(){--r||(n=!t&&o)}}}).detect("https://a-ads.com/px.gif",function(e){try{document.getElementById("aads-49").innerHTML=e?'<iframe data-aa="1160057"src="https://acceptable.a-ads.com/1160057"scrolling="no"allowtransparency="true"style="width:100%;max-width:468px;height:60px;border:0px;padding:0;overflow:hidden"></iframe>':'<iframe data-aa="49"src="https://acceptable.a-ads.com/49"scrolling="no"allowtransparency="true"style="width:100%;max-width:468px;height:60px;border:0px;padding:0;overflow:hidden"></iframe>'}catch(e){console.error(e)}});</script>