var path_to_thumb='1/'; 
var num_of_thumb=10;
var code_num=num_of_thumb-1;
thumbs = new Array(code_num);
<!-- Script writed by Doctor, 2003, for questions knock ICQ 171114296 :o)) -->
function gen(n){return (Math.round(Math.random()*n)+1);}
function check_num(num){
for (j=0;j<=code_num;j++){if (thumbs[j]==num) return false};
return true;}

ex=gen(code_num);
for (k=0;k<=code_num;k++){
if (check_num(ex)) {thumbs[k]=ex;}
	else {
		while (check_num(ex)==false) {ex=gen(num_of_thumb-1)};
		thumbs[k]=ex;
		}
}
var t=0;
function thumb_view(){
document.writeln('<IMG SRC="'+path_to_thumb+thumbs[t]+'.jpg">');
t++;
}