If you are using GMapEz and you load it dynamically, then you may face a problem having a gray area instead of your map. In our case, we were using GMapEz and JQuery Stepy. When the page was loaded, the first step didn’t have a map. When the user hit next, then a map was supposed to appear, but it was gray.
What happens is that if the map is not displayed then you will have to call ‘checkResize’ on GMapEz’ map object.
The first thing you need to do is expose the googlemap as a variable accessible from other scripts. For this, you will need to edit gmapez-x.js, including ‘var googlemap = null;’ in the top of your script, and then modify the source as needed to create the object.
Finally, when the map is displayed (in our case, on step number 2 of the form) you call googlemap.map.checkResize().
This should fix your gray map :-)