function openDir( form ) { 

       	 var newIndex = form.fieldname.selectedIndex; 

	 if ( newIndex == 0 ) { 

		cururl = form.fieldname.options[ newIndex ].value; 

	 } else { 

		cururl = form.fieldname.options[ newIndex ].value; 

		window.location.assign( cururl ); 

	        } 

         }