consume WCF USING jquery

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ASP.NET

hi to all,

i had make wcf services, what when i try invoke insert method using jquery, it's not work:

here is my code :
WCF code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using System.Data; 

// NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService" in both code and config file together.
[ServiceContract]
public interface IService
{
    [OperationContract]
    void addnewcategory(string name, int price, int type);
    [OperationContract]
    DataTable selectcategory();
    [OperationContract]
    void updatecategory(string Name, int price, int type, int id);
    [OperationContract]
    Boolean deletecategory(int id);
	
}

service.cs code :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using Bal;
using System.Data;

// NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service" in code, svc and config file together.
public class Service : IService
{
    public void addnewcategory(string name, int price, int type)
    {
        Bal.insertcategory obbalinsertcategory = new Bal.insertcategory();
        obbalinsertcategory.inserttocategory(name, price, type);

    }
    public DataTable selectcategory()
    {
        Bal.insertcategory obbalinsertcategory = new Bal.insertcategory();
        return obbalinsertcategory.selectcategory();

    }
    public void updatecategory(string Name, int price, int type, int id)
    {
        Bal.insertcategory obbalinsertcategory = new Bal.insertcategory();
        obbalinsertcategory.updatecategroy(Name, price, type, id);
    }
    public Boolean deletecategory(int id)
    {
        Bal.insertcategory obdelte = new Bal.insertcategory();
        return obdelte.deletecategory(id);

    }
}

web.config

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
	<connectionStrings>
		<add name="Con" connectionString="Data Source=.;Initial Catalog=market;User ID=sa;Password=market;Trusted_Connection=false;Pooling=false"/>
	</connectionStrings>
	<system.web>
		<compilation debug="true" targetFramework="4.0"/>
	</system.web>
	<system.serviceModel>
		<behaviors>
			<serviceBehaviors>
				<behavior name="">
					<serviceMetadata httpGetEnabled="true"/>
					<serviceDebug includeExceptionDetailInFaults="false"/>
				</behavior>
			</serviceBehaviors>
		</behaviors>
		<serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
	</system.serviceModel>
</configuration>

aspx code:
hi need here jquery method that invoke addnewcategory from webserice please help