var num_images = 21
var images = new Array(num_images)

images[0] = "../images/logo00.jpg"
images[1] = "../images/logo01.jpg"
images[2] = "../images/logo02.jpg"
images[3] = "../images/logo03.jpg"
images[4] = "../images/logo04.jpg"
images[5] = "../images/logo05.jpg"
images[6] = "../images/logo06.jpg"
images[7] = "../images/logo07.jpg"
images[8] = "../images/logo08.jpg"
images[9] = "../images/logo09.jpg"
images[10] = "../images/logo10.jpg"
images[11] = "../images/logo11.jpg"
images[12] = "../images/logo12.jpg"
images[13] = "../images/logo13.jpg"
images[14] = "../images/logo14.jpg"
images[15] = "../images/logo15.jpg"
images[16] = "../images/logo16.jpg"
images[17] = "../images/logo17.jpg"
images[18] = "../images/logo18.jpg"
images[19] = "../images/logo19.jpg"
images[20] = "../images/logo20.jpg"

var n = Math.floor(Math.random() * num_images)
document.write( "<img src=\"" +images[n]+ "\">" )