Idea is to be able to have something like:

http://browsersim-jbosstools.rhcloud.com/browsersim.jnlp?url=http://aerogear.com

Which would generate jnlp with http://aerogear.com as it is argument and launch the browsersim.

According to http://stackoverflow.com/questions/1199211/java-webstart-with-parameters
we can make jnlp have parameters but it would need to be generated on the fly.