| content | "<h3 class="hd hd-2">Zooming Image Tool</h3>
<p>Use the Zooming Image Tool to enable learners to see details of large, complex images.</p>
<p>With the Zooming Image Tool, the learner can move the mouse pointer over a part of the image to enlarge it and see more detail.</p>
<p>To use the Zooming Image Tool, you must first add the <a href="http://files.edx.org/jquery.loupeAndLightbox.js" target="_blank">jquery.loupeAndLightbox.js JavaScript file</a> to your course.</p>
<p>You must also add both the regular and magnified image files to your course.</p>
<p>The following HTML code shows the format required to use the Zooming Image tool. For the example in this template, you must replace the values in <i>italics</i>.</p>
<pre>
<div class="zooming-image-place" style="position: relative;">
<a class="loupe" href="<i>path to the magnified version of the image</i>">
<img alt="<i>Text for screen readers</i>"
src="<i>path to the image you want to display in the unit</i>" />
</a>
<div class="script_placeholder"
data-src="<i>path to the jquery.loupeAndLightbox.js JavaScript file in your course</i>"/>
</div>
<script type="text/javascript">// >![CDATA[
JavascriptLoader.executeModuleScripts($('.zooming-image-place').eq(0), function() {
$('.loupe').loupeAndLightbox({
width: 350,
height: 350,
lightbox: false
});
});
// ]]></script>
<div id="ap_listener_added"></div>
</pre>
<p>You can modify the example below for your own use.</p>
<ol>
<li>Replace the value of the link's <strong>href</strong> attribute with the path to the magnified image. Do not change the value of the class attribute.</li>
<li>Replace the value of the image's <strong>src</strong> attribute with the path to the image that will appear in the unit.</li>
<li>Replace the value of the image's <strong>alt</strong> attribute with text that both describes the image and the action or destination of clicking on the image. You <strong>must</strong> include alt text to provide an accessible label.</li>
<li>Replace the value of the div element's <strong>data-src</strong> attribute with the path to the jquery.loupeAndLightbox.js JavaScript file in your course.</li>
</ol>
<p>The example below shows a subset of the biochemical reactions that cells carry out. </p>
<p>You can view the chemical structures of the molecules by clicking on them. The magnified view also lists the enzymes involved in each step.</p>
<p class="sr">Press spacebar to open the magnifier.</p>
<div class="zooming-image-place" style="position: relative;">
<a class="loupe" href="https://studio.edx.org/c4x/edX/DemoX/asset/pathways_detail_01.png">
<img alt="magnify" src="https://studio.edx.org/c4x/edX/DemoX/asset/pathways_overview_01.png" />
</a>
<div class="script_placeholder" data-src="https://studio.edx.org/c4x/edX/DemoX/asset/jquery.loupeAndLightbox.js" />
</div>
<script type="text/javascript">// <![CDATA[
JavascriptLoader.executeModuleScripts($('.zooming-image-place').eq(0), function() {
$('.loupe').loupeAndLightbox({
width: 350,
height: 350,
lightbox: false
});
});
// ]]></script>
<div id="ap_listener_added"></div>
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