Test Visiblity
open ./tests/html/test_visibility.html  
verifyVisible visibleParagraph  
verifyNotVisible hiddenParagraph  
verifyNotVisible suppressedParagraph  
verifyNotVisible classSuppressedParagraph  
verifyNotVisible jsClassSuppressedParagraph  
verifyNotVisible hiddenSubElement  
verifyVisible visibleSubElement  
verifyNotVisible suppressedSubElement  
verifyNotVisible jsHiddenParagraph  
verifyNotVisible nonExistantElement