Browsers are moving away from plug-ins for things like switch consoles:

“Mozilla continues to work with the Oracle Java Platform Group to ensure a smooth transition for those web sites that use Java. More information from Oracle about Java transition plans can be found in a post from the Oracle team. Oracle recommends that sites currently using Java applets consider switching to plugin-free solutions such as Java Web Start.”

Use this command in terminal for gui admin on brocade:

Javaws http://<switch ip>/switchExplorer_installed.html