scripts of java at firefox and internet explorer

[mythonline]

i got some scripts that i want to give as the name color here at lomcn, but they seems to work only at internet explorer, and not in firefox, anyone know how i can fix it?, is there any program that i need to use, or that i need to change some of the script because 1 program know it and the other dont?

for example the ones here:
http://www.lomcn.co.uk/forum/showthread.php?p=514385#post514385
http://80.230.199.241/java/blinking.html
http://80.230.199.241/java/jumping.html
http://80.230.199.241/java/neon.html
http://80.230.199.241/java/blinking2.html
http://80.230.199.241/java/blinking3.html