Porting from prototype.js to jQuery

[Daisuke Miura]

in _filter.html.erb

Element.show/hide method is only worked in prototype.js.
I should change the method that can be worked in jQuery.

Maybe, that's "$(id).show" and "$(id).hide".

[Fabian Wallwitz]

Check api usage
http://api.jquery.com/hide/

Show and hide an element with jQuery
http://www.electrictoolbox.com/show-hide-element-with-jquery-part-1/

[Daisuke Miura]

It was fixed now.