I am using the jmyron library to run a webcam, i want to click the mouse and display a jpg image that i have in the sketch folder instead of the webcam, i have put variable values to the size setup to change it for the display but jmyron is not letting me display the jpg image in that size. So I think I most stop the jMyron import somehow

here is my script:

import JMyron.*;

JMyron m;//a camera object

void setup(){
 int w=320;
 int h=240;
 size(m,h),240);
 m = new JMyron();//make a new instance of the object
 m.start(width,height);//start a capture at 320x240

 loadPixels();
}

void draw(){
 m.update();//update the camera view
 m.imageCopy(pixels);//draw image to stage
 updatePixels();

void mousePressed() {
int w=700;
int h=500;
frame.setSize (w,h);
pImage a;
a = loadImage ("x.jpg");
image(a, 100, 100, 320, 240);

how do i stop jmyron to affect the next display when i click the mouse?