I am using the following to set the text and readonly attribute of textbox when checkbox is clicked but it's not working properly. First when I load the page it works fine.. then I set click the checkbox so it will be readonly and text will change.. then when changing it back to editable it also works but the problem occurs when I change the company name then again click the checkbox to set it to readonly... nothing will work that time.. 

2. $("#chkHideCompanyName").click(function () {
3.     if ($(this).is(":checked")) {
4.         $("#txtCompany").attr("value", "Confidential");
5.         $("#txtCompany").attr("readonly", true);
6.     } else {
7.         $("#txtCompany").attr("readonly", false);
8.         $("#txtCompany").attr("value", "<?php echo $company_name; ?>");
9.     }
10. });