diff --git a/norton.png b/norton.png
index a898587..59a108c 100644
Binary files a/norton.png and b/norton.png differ
diff --git a/res/img/calculators/casio-fx-120/1s.jpeg b/res/img/calculators/casio-fx-120/1s.jpeg
old mode 100755
new mode 100644
index 9b253d7..6b84854
Binary files a/res/img/calculators/casio-fx-120/1s.jpeg and b/res/img/calculators/casio-fx-120/1s.jpeg differ
diff --git a/res/img/calculators/casio-fx-120/2s.jpeg b/res/img/calculators/casio-fx-120/2s.jpeg
old mode 100755
new mode 100644
index 0cdb616..1a663bb
Binary files a/res/img/calculators/casio-fx-120/2s.jpeg and b/res/img/calculators/casio-fx-120/2s.jpeg differ
diff --git a/res/img/calculators/casio-fx-120/3s.jpeg b/res/img/calculators/casio-fx-120/3s.jpeg
old mode 100755
new mode 100644
index c87c2db..076d147
Binary files a/res/img/calculators/casio-fx-120/3s.jpeg and b/res/img/calculators/casio-fx-120/3s.jpeg differ
diff --git a/res/img/calculators/casio-fx-120/4s.jpeg b/res/img/calculators/casio-fx-120/4s.jpeg
old mode 100755
new mode 100644
index 3981a43..988ab31
Binary files a/res/img/calculators/casio-fx-120/4s.jpeg and b/res/img/calculators/casio-fx-120/4s.jpeg differ
diff --git a/res/img/calculators/casio-fx-82/1s.jpeg b/res/img/calculators/casio-fx-82/1s.jpeg
old mode 100755
new mode 100644
index d5ba32f..69216ac
Binary files a/res/img/calculators/casio-fx-82/1s.jpeg and b/res/img/calculators/casio-fx-82/1s.jpeg differ
diff --git a/res/img/calculators/casio-fx-82/2s.jpeg b/res/img/calculators/casio-fx-82/2s.jpeg
old mode 100755
new mode 100644
index 29c8469..adf3e2e
Binary files a/res/img/calculators/casio-fx-82/2s.jpeg and b/res/img/calculators/casio-fx-82/2s.jpeg differ
diff --git a/res/img/calculators/casio-fx-82/3s.jpeg b/res/img/calculators/casio-fx-82/3s.jpeg
old mode 100755
new mode 100644
index 9aa97bb..87c6f16
Binary files a/res/img/calculators/casio-fx-82/3s.jpeg and b/res/img/calculators/casio-fx-82/3s.jpeg differ
diff --git a/res/img/calculators/casio-fx-82/4s.jpeg b/res/img/calculators/casio-fx-82/4s.jpeg
old mode 100755
new mode 100644
index de0714c..5a09e97
Binary files a/res/img/calculators/casio-fx-82/4s.jpeg and b/res/img/calculators/casio-fx-82/4s.jpeg differ
diff --git a/res/img/calculators/casio-fx-cg50/1s.jpeg b/res/img/calculators/casio-fx-cg50/1s.jpeg
old mode 100755
new mode 100644
index 6526f7c..6850678
Binary files a/res/img/calculators/casio-fx-cg50/1s.jpeg and b/res/img/calculators/casio-fx-cg50/1s.jpeg differ
diff --git a/res/img/calculators/casio-fx-cg50/2s.jpeg b/res/img/calculators/casio-fx-cg50/2s.jpeg
old mode 100755
new mode 100644
index 9feb772..14dd3cf
Binary files a/res/img/calculators/casio-fx-cg50/2s.jpeg and b/res/img/calculators/casio-fx-cg50/2s.jpeg differ
diff --git a/res/img/calculators/casio-fx-cg50/3s.jpeg b/res/img/calculators/casio-fx-cg50/3s.jpeg
old mode 100755
new mode 100644
index 21c8066..c0c87e1
Binary files a/res/img/calculators/casio-fx-cg50/3s.jpeg and b/res/img/calculators/casio-fx-cg50/3s.jpeg differ
diff --git a/res/img/calculators/casio-fx-cg50/4s.jpeg b/res/img/calculators/casio-fx-cg50/4s.jpeg
old mode 100755
new mode 100644
index c09618e..fcdac2a
Binary files a/res/img/calculators/casio-fx-cg50/4s.jpeg and b/res/img/calculators/casio-fx-cg50/4s.jpeg differ
diff --git a/res/img/calculators/texet-880/1s.jpeg b/res/img/calculators/texet-880/1s.jpeg
old mode 100755
new mode 100644
index 14f849c..8454640
Binary files a/res/img/calculators/texet-880/1s.jpeg and b/res/img/calculators/texet-880/1s.jpeg differ
diff --git a/res/img/calculators/texet-880/2s.jpeg b/res/img/calculators/texet-880/2s.jpeg
old mode 100755
new mode 100644
index 836997c..707b37c
Binary files a/res/img/calculators/texet-880/2s.jpeg and b/res/img/calculators/texet-880/2s.jpeg differ
diff --git a/res/img/calculators/texet-880/3s.jpeg b/res/img/calculators/texet-880/3s.jpeg
old mode 100755
new mode 100644
index 2312952..a5e5f1e
Binary files a/res/img/calculators/texet-880/3s.jpeg and b/res/img/calculators/texet-880/3s.jpeg differ
diff --git a/res/img/calculators/texet-880/4s.jpeg b/res/img/calculators/texet-880/4s.jpeg
old mode 100755
new mode 100644
index 0b9fee8..eedc9be
Binary files a/res/img/calculators/texet-880/4s.jpeg and b/res/img/calculators/texet-880/4s.jpeg differ
diff --git a/res/img/calculators/ti-30/1s.jpeg b/res/img/calculators/ti-30/1s.jpeg
old mode 100755
new mode 100644
index 80133d5..fd34a30
Binary files a/res/img/calculators/ti-30/1s.jpeg and b/res/img/calculators/ti-30/1s.jpeg differ
diff --git a/res/img/calculators/ti-30/2s.jpeg b/res/img/calculators/ti-30/2s.jpeg
old mode 100755
new mode 100644
index 1b18bac..23804f5
Binary files a/res/img/calculators/ti-30/2s.jpeg and b/res/img/calculators/ti-30/2s.jpeg differ
diff --git a/res/img/calculators/ti-30/3s.jpeg b/res/img/calculators/ti-30/3s.jpeg
old mode 100755
new mode 100644
index d51f4bd..e0d1c27
Binary files a/res/img/calculators/ti-30/3s.jpeg and b/res/img/calculators/ti-30/3s.jpeg differ
diff --git a/res/img/calculators/ti-30/4s.jpeg b/res/img/calculators/ti-30/4s.jpeg
old mode 100755
new mode 100644
index 027f74d..b0c3d44
Binary files a/res/img/calculators/ti-30/4s.jpeg and b/res/img/calculators/ti-30/4s.jpeg differ