Code review fiddle
by Samar Pattanayak
HTML
<form id="mapform" name="mapform" method="post" action="" class="map_form">
<select name="continent" id="continent">
<option value="" selected="selected">Choose a Country</option>
<option value="Mali">Mali</option>
<option value="Dominican_Republic">Dominican Republic</option>
<option value="Guatemala">Guatemala</option>
</select>
</form>
JavaScript
var element = document.getElementById("mapform");
element.addEventListener('click',function(event){
if(event.target.value == 'Mali'){
window.open("http://google.com");
}
else
if(event.target.value == 'Dominican_Republic')
{
window.open("http://yahoo.com");
}
event.target.value="";
},false);