function getBannerFormats(bannerSum){

	code='';
	
	if(bannerSum%2==1){ code='300x250'; }
	if(bannerSum%4>1){ add=(code=='')? '' : ','; code+=add+='336x280'; }
	if(bannerSum%8>3){ add=(code=='')? '' : ','; code+=add+='468x60'; }
	if(bannerSum%16>7){ add=(code=='')? '' : ','; code+=add+='120x600'; }
	if(bannerSum%32>15){ add=(code=='')? '' : ','; code+=add+='728x90'; }
	
	return code;
}