Using ScriptManager.RegisterClientScriptBlock inside WebMethod in ASP.Net

In my Asp.Net(C#) web page, I am doing 95% work from Jquery Ajax. Only Print work is happening from server side code because it needs to redirect another page for print. Here is my print button code

protected void btnprint_Click(object sender, ImageClickEventArgs e)
    {
        string status = "Normal";
        string Id = txtReceiptNo.Text;
        string BillType = "BillReceipt";
        string Url = "BillReceipt.aspx";        
        ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "ApprovalHistory", "window.open('BillReceiptReport.aspx?Id=" + Id + "&Status=" + status + "&BillType=" + BillType + "&Url=" + Url + "', '_blank');", true);
    }

When I click Print Button it redirect to printpage with some values in another tab.

But the problem is, when I click Print button Postback happens and everything disturbed in my webpage because as I mentioned above I am doing 95% work using Jquery Ajax.

So I decided to do 100% work from Jquery Ajax and tried to call this print functionality inside Static, WebMethod but I found that RegisterClientScriptBlock is not working inside Static Method. I am trying to do something like this......

[WebMethod]
    public static void PrintReport()
    {
        string status = "Normal";
        string Id = "40";
        string BillType = "BillReceipt";
        string Url = "BillReceipt.aspx";
        ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "ApprovalHistory", "window.open('BillReceiptReport.aspx?Id=" + Id + "&Status=" + status + "&BillType=" + BillType + "&Url=" + Url + "', '_blank');", true);
    }

Please Help.....