http://jsfiddle.net/j999y/3631/
=============== HTML =================
<button id="myelement">HIDE MY VIDEOS</button>
<p class="user_id_match">
This is the paragraph to end all paragraphs. You
should feel <em>lucky</em> to have seen such a paragraph in
your life. Congratulations!
</p>
<p class="">
SHOWN 11 is the paragraph to end all paragraphs. You
should feel <em>lucky</em> to have seen such a paragraph in
your life. Congratulations!
</p>
<p class="user_id_match">
This is the 2222 to end all paragraphs. You
should feel <em>lucky</em> to have seen such a paragraph in
your life. Congratulations!
</p>
<p class="">
SHOWN 22 is the paragraph to end all paragraphs. You
should feel <em>lucky</em> to have seen such a paragraph in
your life. Congratulations!
</p>
<p class="another_element">
This is the 3333 to end all paragraphs. You
should feel <em>lucky</em> to have seen such a paragraph in
your life. Congratulations!
</p>
========== JS ====================
$( "#myelement" ).click(function() {
$(this).text('SHOW MY VIDEOS');
if($('.user_id_match:visible').length)
$('.user_id_match').hide("slide", { direction: "right" }, 1000);
else{
$(this).text('HIDE MY VIDEOS');
$('.user_id_match').show("slide", { direction: "right" }, 1000); }
});