Fixed the iframe example in Showcase so that it loads the modules root url, which has the effect of loading the module in the iframe without any warnings.  I added some default iframe styles.  This patch is TBR.

Patch by: jlabanca



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2373 8db76d5a-ed1c-0410-87a9-c151d255dfc7