I need to understand what does the code do  

this page is on my blog and I have not created it

```
var u = location.href, h = u.substr(u.indexOf('#') + 1).split('&'), t, r;
try {
  t = h[0] === '..' ? parent.parent : parent.frames[h[0]];
  r = t.gadgets.rpc.receive;
} catch (e) {
}
r && r(h);

```

location of the page is  

<http://roadtoheavenisnothere.blogspot.com/rpc_relay.html>