<ul>
<li onclick="$('section').slideUp(500);$('#no_margin').slideToggle(500);">no margin</li>
<li onclick="$('section').slideUp(500);$('#top_margin').slideToggle(500);">top margin</li>
<li onclick="$('section').slideUp(500);$('#bottom_margin').slideToggle(500);">bottom margin</li>
<li onclick="$('section').slideUp(500);$('#top_right_bottom_left_margin').slideToggle(500);">top right bottom left margin</li>
<li onclick="$('section').slideUp(500);$('#right_bottom_left_margin').slideToggle(500);">right bottom left margin</li>
<li onclick="$('section').slideUp(500);$('#top_margin_and_no_margin').slideToggle(500);">top margin and no margin</li>
<li onclick="$('section').slideUp(500);$('#no_margin_and_top_margin').slideToggle(500);">no margin and top margin</li>
</ul>
<section id="no_margin">
<p>
This paragraph has no margin.
</p>
</section>
<section id="top_margin" style="display: none;">
<p class="top_margin">
This paragraph has a top margin.
</p>
</section>
<section id="bottom_margin" style="display: none;">
<p class="bottom_margin">
This paragraph has a bottom margin.
</p>
</section>
<section id="top_right_bottom_left_margin" style="display: none;">
<p class="top_right_bottom_left_margin">
This paragraph has top, right, bottom and left margin.
</p>
</section>
<section id="right_bottom_left_margin" style="display: none;">
<p class="right_bottom_left_margin">
This paragraph has right, bottom and left margin.
</p>
</section>
<section id="top_margin_and_no_margin" style="display: none;">
<p class="top_margin">
This paragraph has a top margin.
</p>
<p class="no_margin">
This paragraph has no margin.
</p>
</section>
<section id="no_margin_and_top_margin" style="display: none;">
<p class="no_margin">
This paragraph has no margin.
</p>
<p class="top_margin">
This paragraph has a top margin.
</p>
</section>