Allow manipulation of map div dimensions

I have a situation where the map is buddied with a sidebar that slides in and out by setting the map div's *right* property to the width of the sidebar. This causes the map to re-size and re-position. Currently, the map div's *inline* width is explicitly set to 100% and causes the sidebar to always cover the map. (The width is also set to 100% in CSS but this can be overridden.)

I've changed this behavior to set the width to *auto* to account for these situations.