// Préchargement des images

    i1 = new Image;
    i1.src = "images/up.png";
    i2 = new Image;
    i2.src = "images/up2.png";
    i3 = new Image;
    i3.src = "images/up3.png";
    i4 = new Image;
    i4.src = "images/up4.png";
    i5 = new Image;
    i5.src = "images/up5.png";
    i6 = new Image;
    i6.src = "images/up6.png";
    i7 = new Image;
    i7.src = "images/up7.png";
    i8 = new Image;
    i8.src = "images/up8.png";
    i9 = new Image;
    i9.src = "images/up9.png";
    i10 = new Image;
    i10.src = "images/logo/arc_over.jpg";
    i11 = new Image;
    i11.src = "images/logo/facebook_over.jpg";
    i12 = new Image;
    i12.src = "images/logo/myspace_over.jpg";
    i13 = new Image;
    i13.src = "images/logo/punkolution_over.jpg";
    i14 = new Image;
    i14.src = "images/logo/tchek_over.jpg";
    i15 = new Image;
    i15.src = "images/logo/twitter_over.jpg";