json call for browser compatibility

var options = {

type: "POST",
contentType: "application/json",
url: ImportInquiryurl,
data: JSON.parse(objinquirys),
dataType: "json",
success: function (msg) {
document.getElementById('<%= txtFirstname.ClientID %>').value = "";
document.getElementById('<%= txtLastName.ClientID %>').value = "";
document.getElementById('<%= txtCompanyName.ClientID %>').value = "";
document.getElementById('<%= txtPhoneNumber.ClientID %>').value = "";
document.getElementById('<%= txtemailaddress.ClientID %>').value = "";
document.getElementById('<%= txtTopic.ClientID %>').value = "";
document.getElementById('<%= txtNotes.ClientID %>').value = "";
document.getElementById('<%= txtZip.ClientID %>').value = "";
document.getElementById('<%= ltrMessage.ClientID %>').innerHTML = "Inquiry Created Successfully";
},
failure: function (error) {
}
};
$.ajax(options);




The code for which i want browser compatibility