jquery.vmap.usa.js 

<script src="js/jquery.vmap.js"></script>
<script src="js/jquery.vmap.usa.js"></script>
 
<script>
jQuery('#vmap').vectorMap({
    map: 'usa_en',
    backgroundColor: null,
    color: '#ffffff',
    hoverColor: '#999999',
    selectedColor: '#666666',
    enableZoom: true,
    showTooltip: true,
    selectedRegion: 'MO'
});
</script>
 
<div id="vmap" style="width: 600px; height: 400px;"></div>