F U met je jS fiddle

<script>
	/*
		Copyright (c) 2008-2014 Sevvlor.co.uk - All rights reserved

	*/
	$(function(){
		$('.dropdown').on('click', function(){
			if( $(this).children('ul').is(':visible') ) {

				$(this).children('ul').slideUp('fast', function(){
					$(this).children('ul').hide();
				});

			} else {

				if ($('.dropdown ul').is(':visible')){
					$('.dropdown').children('ul').slideUp('fast', function(){
						$('.dropdown').children('ul').hide();
					});
				}

				$(this).children('ul').slideDown('fast', function(){
					$(this).children('ul').show();
				});

			}
		});
	});
</script>

.dropdown li {
	float: none;
	color: white;
	font-weight: 100;
}

.dropdown li > a {
	color: white;
	text-decoration: none;
	padding-bottom:4px;
	margin-bottom: 3px;
	border-bottom: #6e6e73 1px solid;
	padding-left: 35px;
}

.dropdown ul {
	display: none;
}

<li class="dropdown"><a href="javascript:void(0)"><i class="icon_ul"></i> BLABLA</span></a>
	<ul>
		<li><a href="{}">{JAJJA}</a></li>
	</ul>
</li>