function randimg(){
var mpics=new Array()

mpics[1]="image/rand_images/show.jpg"
mpics[2]="image/rand_images/show001.jpg"
mpics[3]="image/rand_images/show002.jpg"
mpics[4]="image/rand_images/show003.jpg"
mpics[5]="image/rand_images/show004.jpg"
mpics[6]="image/rand_images/show005.jpg"
mpics[7]="image/rand_images/show006.jpg"
mpics[8]="image/rand_images/show007.jpg"
mpics[9]="image/rand_images/show008.jpg"
mpics[10]="image/rand_images/show009.jpg"
mpics[11]="image/rand_images/show010.jpg"
mpics[12]="image/rand_images/show011.jpg"
mpics[13]="image/rand_images/show012.jpg"
mpics[14]="image/rand_images/show013.jpg"
mpics[15]="image/rand_images/show014.jpg"
mpics[16]="image/rand_images/show015.jpg"
mpics[17]="image/rand_images/show016.jpg"
mpics[18]="image/rand_images/show018.jpg"
mpics[19]="image/rand_images/show019.jpg"
mpics[20]="image/rand_images/show020.jpg"
mpics[21]="image/rand_images/show021.jpg"

var ry=Math.floor(Math.random()*mpics.length)
if (ry==0)
ry=1
document.write('<img src="'+mpics[ry]+'">')
}
randimg()