I am trying to highlight an area on a bitmap. The following is the code I need to implement. Would like to stick with plain JavaScript.

<map class="optionSelector" name="mapTable" id="mapTable">
    <area class="selected" shape="circle" coords="660,160,60" href="#123" onclick="SU37(), myFunction();" />
    <area class="selected" shape="circle" coords="1016,160,60" href="#123" onclick="SU38(), myFunction();" />
</map>


function myFunction() {
    var select = document.getElementsByClassName('selected').mouseover(function() {
    for (var i = 0; i <= 2; i++) {
            var opt = document.createElement('option')[i];
            opt.style.bgColor = '#DA0';
            select.appendChild(opt);
        }
    });
}