title: Image map works in Chrome but not in IE
body: <p>So I have this map code, which seems fine in Chrome but today an IE user reported that the clickable areas weren't clickable.  (Sorry that's vague; not sure if she had mouseover behavior or anything.  I can check if that's important.)</p>
  
  <p>Code:</p>
  
  <pre><code>&lt;img id="flowchart" src="images/course-flowchart.png" usemap="#Map" /&gt;
  &lt;map name="Map" id="Map"&gt;
    &lt;area shape="rect" coords="289,14,397,68" onMouseOver="hoverEss();" onClick="clickEss();" /&gt;
    &lt;area shape="rect" coords="331,70,356,115" onMouseOver="hoverEssPre();" /&gt;
    &lt;area shape="rect" coords="289,115,397,171" onMouseOver="hoverPre();" onClick="clickPre();" /&gt;
    &lt;area shape="rect" coords="330,172,356,216" onMouseOver="hoverPreHsmp();" /&gt;
    &lt;area shape="rect" coords="289,215,397,271" onMouseOver="hoverHsmp();" onClick="clickHsmp();" /&gt;
    &lt;area shape="rect" coords="326,271,361,318" onMouseOver="hoverHsmp10c();" /&gt;
    &lt;area shape="rect" coords="289,318,397,373" onMouseOver="hover10c();" onClick="click10c();" /&gt;
    &lt;area shape="rect" coords="224,382,341,422" onMouseOver="hover10c201();" /&gt;
    &lt;area shape="rect" coords="344,382,464,422" onMouseOver="hover10c202();" /&gt;
    &lt;area shape="rect" coords="180,422,288,478" onMouseOver="hover201();" onClick="click201();" /&gt;
    &lt;area shape="rect" coords="396,422,504,478" onMouseOver="hover202();" onClick="click202();" /&gt;
    &lt;area shape="rect" coords="434,478,467,524" onMouseOver="hover202302();" /&gt;
    &lt;area shape="rect" coords="398,525,504,580" onMouseOver="hover302();" onClick="click302();" /&gt;
    &lt;area shape="rect" coords="220,478,249,524" onMouseOver="hover201301();" /&gt;
    &lt;area shape="poly" coords="295,467,400,516,390,539,283,488" onMouseOver="hover201302();" /&gt;
    &lt;area shape="rect" coords="180,525,288,580" onMouseOver="hover301();" onClick="click301();" /&gt;
    &lt;area shape="rect" coords="68,492,219,524" onMouseOver="hover20131();" /&gt;
    &lt;area shape="rect" coords="26,524,133,580" onMouseOver="hover31();" /&gt;
  
  &lt;/map&gt;
  </code></pre>
  
  <p>Here's the page if you want to see it in situ:
  <a href="https://media.norquest.ca/ace/math/uosc/math-placement.shtml" rel="nofollow noreferrer">https://media.norquest.ca/ace/math/uosc/math-placement.shtml</a></p>
  
  <p>Thanks for any ideas!
  JF</p>