write a javascript program to create option list of images and then display images in new window as per selection

<select id="mySelect">
    <option value="http://www.w3schools.com/tags/smiley.gif">Smiley face</option>
    <option value="http://www.w3schools.com/tags/planets.gif">Planets</option>
    <option value="http://www.w3schools.com/tags/mountain.jpg">Mountain</option>
    <option value="http://www.w3schools.com/tags/sky.jpg">Sky</option>
    </select>

    <button type="button" onclick="myFunction()">Try it</button>

    <script>
    function myFunction() {
        var x = document.getElementById("mySelect").value;
        window.open(x);
    }
    </script>

    <script>
    function myFunction() {
        var myWindow = window.open("", "MsgWindow", "width=200,height=100");
        myWindow.document.write("<p>This is 'MsgWindow'. I