hideempty=”false” above means it will show locations that have no posts. You won’t want this in the final version, but for testing purposes, it helps to have it on.

Other attributes available are:

width: accepts a width in pixels, ie 600px, or a percentage of the available space, ie 100%
height: as width
typeid: accepts either ‘roadmap’, ‘satellite’, ‘terrain’, or ‘hybrid’ and changes the display style of the map.