// blank the current phonenum too
for ( var i = what.form.<% $opt{'prefix'} %>phonenum.length; i >= 0; i-- )
what.form.<% $opt{'prefix'} %>phonenum.options[i] = null;
// blank the current phonenum too
for ( var i = what.form.<% $opt{'prefix'} %>phonenum.length; i >= 0; i-- )
what.form.<% $opt{'prefix'} %>phonenum.options[i] = null;