calling web service in asp.net using jquery

Question

I am trying to call the web service web method using jquery ajax. But i dont what is the error in the following jquery script. can any one find the error and give the correct solution. Thanks in advance

$.ajax({

type: "POST",

contentType: "application/json",

url: "WebEmployee.asmx/employeeDetails",

success: function (data) {

//sucess function

},

error: function () {

//error

}