[OSM-newbies] getting an svg from osmarender through josm

[jan mowblind]

just a simple question (i believe):

i want to save a svg file from my downloaded map in josm.
rendering works fine and i see the results in firefox.

but how can i save the svg image? all i can save in firefox is the  
osm-map-features.xml file.

thanks,
greetings,
jan.