You can open the map in a lightbox. Just add the parameter lightbox to the mosmap or set it as a general option. You also can set the size of the lightbox with lbxwidth and lbxheight.
A caption is possible with lbxcaption and the zoomlevel can be set different then of the showed map by parameter lbxzoom.
You can set a different center with lbxcenterlat and lbxcenterlon.

{mosmap lightbox='1'|lbxwidth='600px'|lbxheight='600px'|lbxcaption='Map'|lbxzoom='16'}

The map can be invisble in the article and only showed in a lightbox link Open lightbox inside the content of the article:

{mosmap lightbox='1'|lbxwidth='600px'|lbxheight='600px'|show='0'|align='none'}

You can change the text of the link in the configuration of the plugin. You can even make it a button or image by placing <img src='<url>' /> in the field text of the lightbox link in the configuration of the plugin.

It is possible to set the center or zoom level of the lightbox different by adding the parameters lbxcenterlat, lbxcenterlon and lbxzoom.

{mosmap lightbox='1'|lbxwidth='600px'|lbxheight='600px'|lbxcaption='Map'|
lbxcenterlat='0'|lbxcenterlon='0'|lbxzoom='3'}