function urlencode(str) {
str = escape(str);
str = str.replace('+', '%2B');
str = str.replace('%20', '+');
str = str.replace('*', '%2A');
str = str.replace('/', '%2F');
str = str.replace('@', '%40');
return str;
}
if (typeof branding == "undefined") {
					document.write('<iframe src="http://widgets.circleintosquare.com/'+product_id+'" width="408" height="160" style="border:5px solid #fff;  overflow: hidden;" scrolling="no"></iframe>');
				} else { 
					document.write('<iframe src="http://widgets.circleintosquare.com/'+product_id+'/'+urlencode(urlstring)+'/'+urlencode(branding)+'" width="408" height="160" style="border:5px solid #fff;  overflow: hidden;" scrolling="no"></iframe>');
					
				}