Wow Slider php

<div id="wowslider-container1">
	<div class="ws_images"><ul>
	<?php

$teknik 	= mysql_query("select * from slider order by id DESC");
					while($oku=mysql_fetch_array($teknik)){
					$id			= $oku['id'];
					$slider_url			= $oku['slider_url'];
					
			

				echo "				 
		<li><img src='data1/images/$slider_url' style='width:980px; height:440px;'></li>
										";

}
?></ul>
	</div>
	<div class='ws_bullets'><div>
	
		<a href='#' title=''><span><img src='data1/tooltips/webdesigntrendswhatscomingupin201601.jpg' alt=''/>1</span></a>
		<a href='#' title=''><span><img src='data1/tooltips/webdesignlasvegas33a1600x900.png' alt=''/>2</span></a>
		<a href='#' title=''><span><img src='data1/tooltips/webdesigngraphic.jpg' alt=''/>3</span></a>
		

	</div></div>
	</div>	
	<script type="text/javascript" src="engine1/wowslider.js"></script>
	<script type="text/javascript" src="engine1/script.js"></script>