ruleOperatorSelect.bind('change',function() {

rule.op = $(ruleOperatorSelect).val();

trpar = $(this).parents(“tr:first”);

var rd = $(“.input-elm”,trpar)[0];

if (rule.op === “nu” || rule.op === “nn”) { // disable for operator “is null” and “is not null”

rule.data = “”;

if(rd.tagName.toUpperCase() != 'SELECT')