I have this input element:

<input type="text" class="textfield" value="" id="subject" name="subject">

Then I have some other elements, like other text inputs, textareas, etc.

When the user clicks on that input with #subject, the page should scroll to the last element of the page with a nice animation. It should be a scroll to bottom and not to top.

The last item of the page is a submit button with #submit:

<input type="submit" class="submit" id="submit" name="submit" value="Ok, Done.">

The animation should not be too fast and should be fluid.

I am running the latest jQuery version. I prefer to not install any plugin but to use the default jQuery features to achieve this.