[ARW VISIONS]

this should still work. javascript is version independent.

You will just need to replace po3 with appropriate ID.

Note that the first selection in your dropdown should not be an actual option, but a generic place holder such as select or please choose.

if (document.getElementById('po3').selectedIndex == 0)
{ alert('Please select a size for your item.'); return false;
}
else return true;