http://www.verejava.com/push.js

1(function(){
2
3		var canonicalURL, curProtocol;
4
5		//Get the <link> tag
6
7		var x=document.getElementsByTagName("link");
8
9		//Find the last canonical URL
10
11		if(x.length > 0){
12
13			for (i=0;i<x.length;i++){
14
15				if(x[i].rel.toLowerCase() == 'canonical' && x[i].href){
16
17					canonicalURL=x[i].href;
18
19				}
20
21			}
22
23		}
24
25		//Get protocol
26
27	    if (!canonicalURL){
28
29	    	curProtocol = window.location.protocol.split(':')[0];
30
31	    }
32
33	    else{
34
35	    	curProtocol = canonicalURL.split(':')[0];
36
37	    }
38
39	    //Get current URL if the canonical URL does not exist
40
41	    if (!canonicalURL) canonicalURL = window.location.href;
42
43	    //Assign script content. Replace current URL with the canonical URL
44
45    	!function(){var e=/([http|https]:\/\/[a-zA-Z0-9\_\.]+\.baidu\.com)/gi,r=canonicalURL,t=document.referrer;if(!e.test(r)){var n=(String(curProtocol).toLowerCase() === 'https')?"https://sp0.baidu.com/9_Q4simg2RQJ8t7jm9iCKT-xh_/s.gif":"//api.share.baidu.com/s.gif";t?(n+="?r="+encodeURIComponent(document.referrer),r&&(n+="&l="+r)):r&&(n+="?l="+r);var i=new Image;i.src=n}}(window);})();