Index: picture.c
==================================================================
--- picture.c
+++ picture.c
@@ -493,10 +493,12 @@
   int y0=re?re->y:0;
   int x1=re?re->x+12:12;
   int y1=re?re->y+re->h:screen->h;
   int y;
   double f;
+  max-=page;
+  if(max<0) max=0;
   switch(ev?ev->type:SDL_VIDEOEXPOSE) {
     case SDL_MOUSEMOTION:
       if(ev->motion.x<x0 || ev->motion.x>x1 || ev->motion.y<y0 || ev->motion.y>=y1) return 0;
       if(ev->motion.state&SDL_BUTTON(2)) {
         y=ev->motion.y;