var imagenumber = 71 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;

images = new Array
images[1] = "images/top1.jpg"
images[2] = "images/top2.jpg"
images[3] = "images/top3.jpg"
images[4] = "images/top4.jpg"
images[5] = "images/top5.jpg"
images[6] = "images/top011.jpg"
images[7] = "images/top7.jpg"
images[8] = "images/top8.jpg"
images[9] = "images/top9.jpg"
images[10] = "images/top010.jpg"
images[11] = "images/top011.jpg"
images[12] = "images/top012.jpg"
images[13] = "images/top013.jpg"
images[14] = "images/top014.jpg"
images[15] = "images/top015.jpg"
images[16] = "images/top016.jpg"
images[17] = "images/top017.jpg"
images[18] = "images/top018.jpg"
images[19] = "images/top019.jpg"
images[20] = "images/top020.jpg"
images[21] = "images/top021.jpg"
images[22] = "images/top022.jpg"
images[23] = "images/top023.jpg"
images[24] = "images/top024.jpg"
images[25] = "images/top025.jpg"
images[26] = "images/top026.jpg"
images[27] = "images/top027.jpg"
images[28] = "images/top028.jpg"
images[29] = "images/top029.jpg"
images[30] = "images/top030.jpg"
images[31] = "images/top031.jpg"
images[32] = "images/top032.jpg"
images[33] = "images/top033.jpg"
images[34] = "images/top034.jpg"
images[35] = "images/top035.jpg"
images[36] = "images/top036.jpg"
images[37] = "images/top037.jpg"
images[38] = "images/top038.jpg"
images[39] = "images/top039.jpg"
images[40] = "images/top040.jpg"
images[41] = "images/top041.jpg"
images[42] = "images/top042.jpg"
images[43] = "images/top043.jpg"
images[44] = "images/top044.jpg"
images[45] = "images/top045.jpg"
images[46] = "images/top046.jpg"
images[47] = "images/top047.jpg"
images[48] = "images/top048.jpg"
images[49] = "images/top049.jpg"
images[50] = "images/top050.jpg"
images[51] = "images/top051.jpg"
images[52] = "images/top052.jpg"
images[53] = "images/top053.jpg"
images[54] = "images/top054.jpg"
images[55] = "images/top055.jpg"
images[56] = "images/top056.jpg"
images[57] = "images/top057.jpg"
images[58] = "images/top058.jpg"
images[59] = "images/top059.jpg"
images[60] = "images/top060.jpg"
images[61] = "images/top061.jpg"
images[62] = "images/top062.jpg"
images[63] = "images/top063.jpg"
images[64] = "images/top064.jpg"
images[65] = "images/top065.jpg"
images[66] = "images/top066.jpg"
images[67] = "images/top067.jpg"
images[68] = "images/top068.jpg"
images[69] = "images/top069.jpg"
images[70] = "images/top070.jpg"
images[71] = "images/top071.jpg"



var image = images[rand1]