+void ScaleImage(int pos, int zoom_factor)
+{
+ ImageInfo *img_info = getImageInfoEntryFromImageID(pos);
+
+ if (img_info == NULL || img_info->scaled_up)
+ return;
+
+ if (zoom_factor != 1)
+ ScaleBitmap(img_info->bitmap, zoom_factor);
+
+ img_info->scaled_up = TRUE;
+}
+