var _cid = 21023;
var _entry_js = '//tracer21.a-cast.jp/entry.js?cid='; 
var _proto = window.location.protocol; 
if (_proto != 'http:' && _proto != 'https:') { 
    _proto = 'http:'; 
}
document.write('<scr' + 'ipt type="text/javascript" ' 
    + 'language="JavaScript" src="' 
    + _proto + _entry_js + _cid + '" ></' + 'scr' + 'ipt>');