var areacodeerror = document.getElementById('<% $opt{'prefix'} %>areacodeerror');
areacodeerror.style.display = 'none';
what.form.<% $opt{'prefix'} %>exchange.disabled = 'disabled';
what.form.<% $opt{'prefix'} %>phonenum.disabled = 'disabled';
var areacodeerror = document.getElementById('<% $opt{'prefix'} %>areacodeerror');
areacodeerror.style.display = 'none';
what.form.<% $opt{'prefix'} %>exchange.disabled = 'disabled';
what.form.<% $opt{'prefix'} %>phonenum.disabled = 'disabled';