<script language="javascript" type="text/javascript">   
var a=Math.round(Math.random()*9)   
image = new Array();   
image[0]="001.jpg"   
image[1]="002.jpg"   
image[2]="003.jpg"
image[3]="004.jpg"   
image[4]="005.jpg"   
image[5]="006.jpg"
image[6]="007.jpg"   
image[7]="008.jpg"   
image[8]="009.jpg"   
image[9]="010.jpg"
document.write ("<img src="+image[a]+">");   
</script>