add spec for Browser#execute_script running JS inside of an anonymous function
add spec for Browser#execute_script running JS inside of an anonymous function

titusfortner/watir,watir/watir,jkotests/watir,abotalov/watir-webdriver,titusfortner/watir-webdriver,watir/watir,abotalov/watir-webdriver,titusfortner/watir,titusfortner/watir,watir/watir,titusfortner/watir-webdriver,titusfortner/watir,jkotests/watir,abotalov/watir-webdriver,watir/watir,jkotests/watir-webdriver,jkotests/watir-webdriver,jkotests/watir,jkotests/watir,abotalov/watir-webdriver