Untitled

Change Image by clicking on list Item
<script type="text/javascript"  src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>

$("li").bind("mouseover",function(){
$("img").hide();
$("#img"+this.value).show();
console.log(this.value);
    });

    </script>

    </head>

    <body>


    <div>
    <img id="img0" src="../../WDC/Jan-Cal.png"  />
    <img id="img1" src="../../WDC/Feb-Cal.png"  />
    <img id="img2" src="../../WDC/March-Cal.png"/>

    </div>

    <ul>
    <li value="0">January</li>
    <li value="1">February</li>
    <li value="2">March</li>

     </ul>

    </body>

    </html>

<ul id="months">
   <li><img class="jan" src="../../WDC/Jan-Cal.png" /></li>
   <li><img class="feb" src="../../WDC/Feb-Cal.png" /></li>
</ul>

function changeImage(evt){
   // Get the image that was clicked.
   var target = evt.target || evt.srcElement;

   // Then get the src or get the class
   var targetSrc = target.src;
   var targetClass = target.getAttribute("class");

   // Do more processing here...
   // Then you can change the src of the image if need be.

}

var months = document.getElementById("months");
months.addEventListener("click", changeImage, true);

var images = $('#images').find('img');

//hide images at the beginning
images.not(images.first()).hide();

$("#legends").on("mouseover", 'li', function () {
    var $this = $(this),
        $this_val = $this.val();

    $("img").hide();
    $("#img"+$this_val).show();
});

<div id="images">
<img id="img0" src="../../WDC/Jan-Cal.png"  />
<img id="img1" src="../../WDC/Feb-Cal.png"  />
<img id="img2" src="../../WDC/March-Cal.png"/>
</div>

<ul id="legends">
<li value="0">January</li>
<li value="1">February</li>
<li value="2">March</li>
 </ul>