Script UI set background image

Hi everyone

Is that possible for script UI to set a background image.

like a image in the background.

I got this script,

function mDialog()

{ // user choice

  var

  w = new Window("dialog","Change paragraphs' Indents", undefined, {closeButton: false}),  

         stringList = [ "01   indent (00, 00)",//0

                               "02   indent (08, 00)",//1

                               "03   indent (16, 00)",//2

                               "04   indent (24, 00)",//3

                               "05   indent (32, 00)",//4

                               "06   indent (40, 00)",//5

                               "-",                            //6

                               "07   indent (00, 08)",//7

                               "08   indent (08, 08)",//8

                               "09   indent (16, 08)",//9

                               "10   indent (24, 08)",//10

                               "11   indent (32, 08)",//11

                               "12   indent (40, 08)",//12

                               "-",                            //13

                               "21   indent (08, -8)",//14

                               "22   indent (16, -8)",//15

                               "23   indent (24, -8)",//16

                               "24   indent (32, -8)",//17

                               "25   indent (40, -8)",//18

                               "26   indent (48, -8)"],//19

  mReminderString = "Script made by Wong Siu Ping.\rAll rights reserved.",

  lastSelected = Number(app.extractLabel("dialogIndents") ),

  p = w.add("panel", undefined, "Choose a version of indent"),

  mDD = p.add("dropdownlist", undefined, stringList),

  mRem = p.add("statictext", undefined, mReminderString, {multiline: true} ),

  p1 = w.add("image", undefined, File ("~/Desktop/runner.jpg"));

  p1 .size = [230,160];

  b = w.add("group");

     mDD.preferredSize = [200,23];

     if ( !lastSelected ) mDD.items[0].selected = true;

      else mDD.items[lastSelected].selected = true;

         w.graphics.backgroundColor = w.graphics.newBrush (w.graphics.BrushType.SOLID_COLOR, [0.3, 0.5, 0.8]);

     mRem.alignment = "left";

    mRem.graphics.font = ScriptUI.newFont ("Arial", "Bold", 10);

     mRem.graphics.foregroundColor = mRem.graphics.newPen (w.graphics.PenType.SOLID_COLOR, [1, 1, 1], 1);

    p.graphics.font = ScriptUI.newFont ("Arial", "Bold", 13);

     p.graphics.foregroundColor = mRem.graphics.newPen (w.graphics.PenType.SOLID_COLOR, [1, 1, 1], 1);

    mDD.graphics.font = ScriptUI.newFont ("Arial", "Bold", 12);

     mDD.graphics.foregroundColor = mRem.graphics.newPen (w.graphics.PenType.SOLID_COLOR, [0.3, 0.5, 0.8], 1);

     b.add ('button', undefined, "OK", {name: "OK"}); 

     b.add ('button', undefined, "ยกเลิก ", {name: "Cancel"}); 

  if (w.show() ==1 ) {

  app.insertLabel("dialogIndents", String(mDD.selection.index) );

  return mDD.selection.index;

  }

  else exit();

}

function checkSelection()

{ // alert if wrong selection, set target

    var mMsg = "Can't do any job\rSelect some text as a target or place cursor inside target paragraph";

    if ( !app.documents.length || !app.selection.length) {

        alert (mMsg);

        exit();

        }

    var curObj = app.selection[0];

    do {

        if (app.selection[0].hasOwnProperty ("contents") ) return curObj;

        curObj = curObj.parent;

        }

    while (curObj.constructor.name != "Spread")

    alert (mMsg);

    exit();

    }

function main()

{ // starter

  indents( checkSelection(), mDialog() ); 

}

function indents(myObject, myChoice)

{ // job function

  switch (myChoice) {

  case 0:

              break;

if it is possible, can someone tell me how to set the image into background

thanks

Regard

Teetan