/*
on precharge les images de substitution
*/
i1 = new Image;
i1.src = "images/plomberie-01_cen.jpg";
i2 = new Image;
i2.src = "images/plomberie-02_cen.jpg";
i3 = new Image;
i3.src = "images/plomberie-03_cen.jpg";
i4 = new Image;
i4.src = "images/plomberie-04_cen.jpg";
i5 = new Image;
i5.src = "images/plomberie-05_cen.jpg";
i6 = new Image;
i6.src = "images/plomberie-06_cen.jpg";
i7 = new Image;
i7.src = "images/plomberie-07_cen.jpg";
i8 = new Image;
i8.src = "images/plomberie-08_cen.jpg";
i9 = new Image;
i9.src = "images/plomberie-01_centre.jpg";
i10 = new Image;
i10.src = "images/plomberie-09_cen.jpg";
i11 = new Image;
i11.src = "images/plomberie-10_cen.jpg";
i12 = new Image;
i12.src = "images/plomberie-11_cen.jpg";