Private Sub PictureBox1_MouseEnter(ByVal sender As System.Object, ByVal e _
      As System.EventArgs)   Handles PictureBox1.MouseHover
 
        PictureBox1.visible = false
        pictureBox2.visible = true
 
    End Sub
 
 
    Private Sub PictureBox2_Mouseleave(ByVal sender As System.Object, ByVal e _
      As System.EventArgs) Handles PictureBox2.MouseHover
 
        PictureBox1.visible = true
        pictureBox2.visible = false
 
    End Sub