Print Grid View and Graph

Hi, I am trying to print a grid view and a graph which are placed on a single aspx page on one single page.

At the moment I am able to print the grid view using the following code, however I am unsure how to print the graph and gridview together.

<script type="text/javascript" >

   function printItn() {

         var prtGrid = document.getElementById('<%=GridView2.ClientID %>');
        

     

prtGrid.border = 0;

var prtwin = window.open('', 'PrintGridViewData', 'left=100,top=100,width=1000,height=1000,tollbar=0,scrollbars=1,status=0,resizable=1');

prtwin.document.write(prtGrid.outerHTML);

prtwin.document.close();

prtwin.focus();

prtwin.print();

prtwin.close();

        }

   </script>

<asp:Button ID="btnPrint" Runat="server" Text="Print Results " OnClientClick="printItn();"
        onclick="btnPrint_Click" /

The ID of graph which I am tring to print is Chart1.

I welcome your suggestions, thank you for your help.