var imagenumber = 22 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[22] = "images/bkbnr/b_25.jpg"
images[21] = "images/bkbnr/b_24.gif"
images[20] = "images/bkbnr/b_23.gif"
images[19] = "images/bkbnr/b_22.jpg"
images[18] = "images/bkbnr/b_21.gif"
images[17] = "images/bkbnr/b_20.gif"
images[16] = "images/bkbnr/b_19.jpg"
images[15] = "images/bkbnr/b_18.jpg"
images[14] = "images/bkbnr/b_17.jpg"
images[13] = "images/bkbnr/b_16.jpg"
images[12] = "images/bkbnr/b_15.jpg"
images[11] = "images/bkbnr/b_14.gif"
images[10] = "images/bkbnr/b_13.jpg"
images[9] = "images/bkbnr/b_11.jpg"
images[8] = "images/bkbnr/b_10.gif"
images[7] = "images/bkbnr/b_09.jpg"
images[6] = "images/bkbnr/b_07.jpg"
images[5] = "images/bkbnr/b_06.jpg"
images[4] = "images/bkbnr/b_05.jpg"
images[3] = "images/bkbnr/b_04.jpg"
images[2] = "images/bkbnr/b_02.jpg"
images[1] = "images/bkbnr/b_01.jpg"
var image = images[rand1]

links = new Array
links[22] = "book/book25/index.html"
links[21] = "book/book24/index.html"
links[20] = "book/book23/index.html"
links[19] = "book/book22/index.html"
links[18] = "book/book21/index.html"
links[17] = "book/book20/index.html"
links[16] = "book/book19/index.html"
links[15] = "book/book18/index.html"
links[14] = "book/book17/index.html"
links[13] = "book/book16/index.html"
links[12] = "book/book15/index.html"
links[11] = "book/book14/index.html"
links[10] = "book/book13/index.html"
links[9] = "book/book11/index.html"
links[8] = "book/book10/index.html"
links[7] = "book/book09/index.html"
links[6] = "book/book07/index.html"
links[5] = "book/book06/index.html"
links[4] = "book/book05/index.html"
links[3] = "book/book04/index.html"
links[2] = "book/book02/index.html"
links[1] = "book/book01/index.html"
var link = links[rand1]