I have a FuncUnit test case wherein I open a webpage using 

```
F.open("http://www.example.com");

```

There is a known issue in our page that approximately one in around 20 times the webpage would not load for whatever reason. I want to retry when it does not load. But in FuncUnit there is no way to suppress error if it fails to load the page. Is there a way to suppress error message in Funcunit?