document.write("<div id='iza.it.728x90'>");
document.write("</div>");
 (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>');
 })();


    var gsizes = JSON.stringify("300x250,728x90,970x250".split(",")); 
    if ("300x250,728x90,970x250".split(",") == 0){
     	gsizes = [300,250];
    }else {
        var tmpSizes = gsizes = "300x250,728x90,970x250".split(",")
        gsizes = [];
        for (i=0;i<tmpSizes.length;i++){
             var sz = tmpSizes[i];
             sz = sz.replace(/x/g,",").replace(/"/g,"");
             sz = "["+sz+"]"
             gsizes.push(JSON.parse(sz));
        }
    }


    var gtmp = googletag.defineSlot('/6974/iza.it.728x90', gsizes,'iza.it.728x90')
      .addService(googletag.pubads())


googletag.enableServices();
googletag.display('iza.it.728x90');