Fixed bugs in DomElement functions where DomElement.get(el) might return null
Fixed bugs in DomElement functions where DomElement.get(el) might return null

git-svn-id: f9d823c90a32400593a994373deabe1ce7dbadd7@163 917dd4d6-6a9c-4700-b622-114467236220

lehni/bootstrap.js,lehni/bootstrap.js,lehni/bootstrap.js