Fixes Issue #174.
Fixes several issues that manifest as mixed security warnings on IE6 when
running over SSL. All issues stem from the fact that IE6 reports mixed
security when the DOM includes an iframe with no explicit src attribute
set. The basic solution is to added javascript:'' as a benign src. The
fix has been applied to the iframe shim in PopupPanelImplIE6, the iframe
in RichTextAreaImplIE6 and the static history iframe generated with
applicationCreator. Docs and samples have also been updated to reflect the
change to the history iframe.

Patch by: knorton, scottb
Suggested by: josh.hinman, mat.gessel, vladimir.lapacek
Review by: knorton, scottb



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1036 8db76d5a-ed1c-0410-87a9-c151d255dfc7
8 files changed