Exercise e-mail form's 'Submit' button visibility

Also fix this (from Pjotr):

I've tried to see the email sending form in lemill.net and found a problem.

see this: http://lemill.net/content/exercises/niidu-taimed

The problem is with this line of code:

javascript:$('#sending_email').toggle('slow');

Should be:

javascript:$('#sending_email').toggle('slow');void(0);

That should prevent it from doing anything it is not supposed to. In IE, Firefox and Opera it opens a new page with url as the code is and the contents of [Object Object]

Sarafi and Chrome do render it the right way, but the elements behave jumpy.