// Photoshop CS script: 
//
// Jim Elder, Ottawa, Dec 2004

// Save the current preferences
var startRulerUnits = app.preferences.rulerUnits;
var startTypeUnits = app.preferences.typeUnits;
var startDisplayDialogs = app.displayDialogs;

// Set Photoshop to use pixels and display no dialogs
app.preferences.rulerUnits = Units.PIXELS;
app.preferences.typeUnits = TypeUnits.PIXELS;
app.displayDialogs = DialogModes.NO;

// Start the script debugger
// uncomment the line below to cause Photoshop to start its debugger at this point
$.level = 1; debugger;

if (confirm("Do you want the current document to be expanded?")) {

  var loops = prompt("How many times should it be expanded 10%?", 4);

  if (loops > 0) {
    if (loops > 10)
      loops = 10;
  
    while (loops-- > 0) {
      // resize the image by 10%
      app.activeDocument.resizeImage(app.activeDocument.width * 1.1,
          app.activeDocument.height * 1.1, app.activeDocument.resolution);
    }

  }
}

// Reset the application preferences
app.preferences.rulerUnits = startRulerUnits;
app.preferences.typeUnits = startTypeUnits;
app.displayDialogs = startDisplayDialogs;