Smooth scroll and new location drop down menu

[helix]

Hello,
Have a drop down menu with two options: go to link within the page, want to use smooth scroll or go to a different page. Cannot get the two options to work together. If smooth scroll working, opening new link does not work, and vs.

<select name="dropdown" size="1" id="dropdown" onChange="scrollTo(this.value); top.location.href = this.form.dropdown.options[this.form.dropdown.selectedIndex].value;
return false;">
<option value="" selected="selected">Menu</option>
			<option value="#services">Services</option>
			<option value="#portfolio">Portfolio</option> 
                         <option value="http://XYZ.com">JavaScript Samples</option>
 
</select>

Any suggestion how to get the two types of link to work and keeping the smooth scroll for anchors
Thank you

[clueful]

Try

onChange="if( !/^http/.test( this.value ) ){ scrollTo(this.value); } else{ top.location.href = this.value }