dfp_sync_before_head.html

<script type="text/javascript">
          (function() {
              var useSSL = 'https:' == document.location.protocol;
              var src = (useSSL ? 'https:' : 'http:') + '//www.googletagservices.com/tag/js/gpt.js';
              document.write('<scr' + 'ipt src="' + src + '"></scr' + 'ipt>');
          })();
</script>
<script type="text/javascript">
              googletag.pubads().set("adsense_background_color", "FFFFFF");
</script>
<script>
    googletag.defineSlot("/1234/travel/asia/food", [728, 90], "div-gpt-ad-123456789-0")
        .addService(googletag.pubads())
        .setTargeting("interests", ["sports", "music", "movies"]);
   googletag.pubads().setTargeting("topic", "basketball");
   googletag.pubads().enableSingleRequest();
   googletag.enableServices();
</script>