function val() { w = document.getElementById("w-select"); w.value = ''; w.required = ""; } function val2() { a = document.getElementById("a-select"); a.value = ''; a.required = ""; } $(document).ready(function () { $('.form-text').hide(); $('.help').click(function () { $('.form-text').slideToggle(); }); $('#op1').val(this.checked); $('#op1').change(function () { if (this.checked) { $('option[disabled="disabled"]').hide(); } else { $('option[disabled="disabled"]').show(); } }); });