NOTE: This demo is using a patched copy of jquery-ui-1.8.1 to
fix 2 bugs in the UI Resizable._alsoResize method used by the dialog.
One of the bugs is Opera-specific.
I committed a patch the fixes both bugs, so the issues should be fixed in the next
maintentance release of UI (1.8.3?)
In the meantime, both bugs can be avoided by adding an extra DIV inside the dialog
to contain the layout - set it's height & width to 100%.
If you need assistance with this, ask in the Layout discussion forum.