Jag undrar om det går att välta eller vända en bild upponer med VB, html eller javascript.

Du kan använda PaintPicture:
<code>
Option Explicit

Private mPicture As StdPicture

Private Sub Form_Load()
Set mPicture = LoadPicture("C:\WINDOWS\Fisketur.bmp")
End Sub

Private Sub Form_Paint()
Dim PicWidth As Single
Dim PicHeight As Single
PicWidth = ScaleX(mPicture.Width)
PicHeight = ScaleY(mPicture.Height)
PaintPicture mPicture, _
ScaleLeft, _
ScaleTop, _
PicWidth, _
PicHeight, _
PicWidth, _
PicHeight, _
-PicWidth, _
-PicHeight
End Sub
</code>