Drop down list with submit button, <form> with "submit" button Options

[Sadiq]

Hi there,
I was looking for a drop down list with a "submit" button. After selecting when you submit, it will execute. So far I was able to make the drop down list WITHOUT submit button. It executes immediately as you select. Can anyone integrate "submit" button to it?

CODE

<form name="departments">
<div align="center">
<select name="departments" id="departments">
                <option value="departments" selected disabled>Select Your Department</option>
           <option value="mysite.com/AEE">Department of Aerospace Engineering</option>
            <option value="mysite.com/ARCH">Department of Architecture</option>
</select>
</div>
<script type="text/javascript">
var urlmenu = document.getElementById( 'departments' );
urlmenu.onchange = function() {
      window.open(  this.options[ this.selectedIndex ].value );
};
</script>
</form>