The maps in the forum are generally screenshots, so do not contain any other information. Using Javascript or Flash it should be possible to replicate the mouse over text description used in the game itself, but that would be a fair amount of extra work for little extra benefit (it is easier to number the flags/locations and list the descriptions beside or on the screenshot). I don't think any of the screenshots on Larian's site are set up to pop up flag information (I vaguely recall one fan site that did so for some of the maps).