Open Page in New Tab on Button click in ASP.Net

HTML:

 <asp:LinkButton runat="server" Text="Java" OnClick="OpenLink"  />

C#:

protected void OpenLink(object sender, EventArgs e)
    {
        string message = "http://www.java.com/en/download/index.jsp";
        System.Text.StringBuilder sb = new System.Text.StringBuilder();
        sb.Append("<script type = 'text/javascript'>");
        sb.Append("window.onload=function(){");
        sb.Append("window.open('");
        sb.Append(message);
        sb.Append("')};");
        sb.Append("</script>");
        ClientScript.RegisterClientScriptBlock(this.GetType(), "open", sb.ToString());
    }