Hi, I'm trying to get the detail to move from 5 to 200 in 5 pixel steps but I'm not too sure how to go about it.  Any suggestions?
Here's my program, it's basically an image:

PImage img;
int detail = 5;

void setup() {
size(400, 268);
img = loadImage("blogPhoto023.jpg");
image(img, 0, 0);
}

void draw() {//keeps sketch running so that I can listen for
//the mouse.

;
}
void mouseClicked() {
for ( int i=0; i<width; i+=detail) {
for ( int j=0; j<height; j+=detail) {
color c = img.get(i, j);
fill(c);
rect(i, j, detail, detail);
}
}
detail += 5; //short way of writing: detail = detail + 5;
}