I am trying to write some selenium inside my scenario's. However, when I try to start Selenium using the following code:

before "start selenium", {
given "selenium is up and running", {
selenium = new DefaultSelenium("localhost",
4444, "*firefox", "http://www.google.com.my/")
selenium.start()
}

I get an error:

Error running easyb tests: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, : 7: unable to resolve class DefaultSelenium 

I am trying to implement something like this http://www.theserverside.com/news/thread.tss?thread_id=55184

Much appreciated.