That "Javascript:void(null)" likely indicates the Webmaster is generating the link using Javascript. Attempting to open the link in a new window or whatever probably won't work; you need to just click on it.
Java and Javascript both have the word "java" in them, but they're as different as a sharkbite plumbing fixture and a great white shark. They are completely unrelated things with different functions, invented by different people at different companies.
