Кнопка «Скачать» с функцией фоновой загрузки файла для DLE

<script type="text/javascript" src="/js/download_button.js"></script>

<link href="https://fonts.googleapis.com/css?family=Roboto+Condensed" rel="stylesheet">

.black_button * {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

.black_button *:before, .black_button *:after {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

.black_button {
	height: 61px;
	width: 265px;
	border-top: 1px solid #4b4b4b;
	border-bottom: 1px solid #090909;
	border-left: 1px solid #090909;
	border-right: 1px solid #090909;
	border-radius: 99px;
	background: #313131;
	background: -moz-linear-gradient(top, #313131 0%, #242424 100%);
	background: -webkit-linear-gradient(top, #313131 0%, #242424 100%);
	background: linear-gradient(to bottom, #313131 0%, #242424 100%);
	filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#313131', endColorstr='#242424', GradientType=0);
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
	cursor: pointer;
	transition: .2s;
	margin: 0 auto;
}

.black_button:hover {
	box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
	transition: .2s;
}

.black_button_one {
	color: #838383;
	font-family: 'Roboto Condensed', sans-serif;
	font-size: 18px;
	height: 60px;
	line-height: 60px;
	text-shadow: 0 1px 2px rgba(0, 0, 0, .6);
	width: 200px;
	margin: 0 auto;
	background: url('../img/download.png') no-repeat center right;
}

.left_button span {
	font-size: 13px;
}

.black_button_progress {
	width: 200px;
	margin: 0 auto;
	color: #838383;
	font-family: 'Roboto Condensed', sans-serif;
	text-shadow: 0 1px 2px rgba(0, 0, 0, .6);
	display: none;
}

.right_button {
	font-size: 24px;
	float: left;
	width: 60px;
	text-align: right;
	height: 60px;
	line-height: 60px;
}

.left_button {
	float: left;
	width: 140px;
	padding: 8px 0 0 0;
}

.progress_bar {
	background: #222;
	border-bottom: 1px solid #393939;
	height: 10px;
	border-radius: 99px;
	box-shadow: inset 0px 1px 2px rgba(0, 0, 0, 0.5);
	padding: 2px 0 0 0;
	margin: 7px 0 0 0;
}

.progress_line {
	background: #2c4c7f;
	background: -moz-linear-gradient(left,  #2c4c7f 0%, #c95cc6 50%, #f7b401 100%);
	background: -webkit-linear-gradient(left,  #2c4c7f 0%,#c95cc6 50%,#f7b401 100%);
	background: linear-gradient(to right,  #2c4c7f 0%,#c95cc6 50%,#f7b401 100%);
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#2c4c7f', endColorstr='#f7b401',GradientType=1 );
	height: 5px;
	margin: 0 2px 0 2px;
	border-radius: 99px;
	position: relative;
	max-width: 136px;
	width: 0;
}

.progress_line div {
	position: absolute;
	height: 1px;
	background: #fff;
	border-radius: 99px;
	opacity: 0.4;
	left: 1px;
	right: 1px;
}

<div class="black_button" data-item="{link}">
	<div class="black_button_one">Нажми & Скачай</div>
	<div class="black_button_progress">
		<div class="left_button">
			<span>Идет скачивание...</span>
			<div class="progress_bar">
				<div class="progress_line">
					<div></div>
				</div>
			</div>
		</div>

		<div class="right_button">0%</div>
	</div>
</div>

 Показать / Скрыть текст

$tpl->set( '{link}', $config['http_home_url']."engine/download.php?id=".$row['id'].$area );

$tpl->set('{link}', $config['http_home_url']."uploads/files/".$row['onserver']);

$tpl->result['attachment'] = str_replace( $row['name'], "\\1", $tpl->result['attachment'] );

$tpl->result['attachment'] = preg_replace("/\b(".$row['name'].")\b/i", "\\$1", $tpl->result['attachment']);