var k;
imgprint=1;
imgall=2;
var ran=new Array(imgprint-1);

function random_number(){
return Math.round(Math.random() * imgall);
}

function check(num){
while(k!=num){
ran[num]=random_number();
k=0;
for(a=0;a<num;a++){
if(ran[a]!=ran[num]){
k++
}
}
}
}

ran[0]=random_number();
for(a=1;a<imgprint;a++){
check(a);
}

img=new Array(imgall);
link=new Array(imgall);
alt=new Array(imgall);

img[0]="images/brs/br0079.jpg"; link[0]="https://t.me/RealAtomInfo"; alt[0]="Телеграм-канал RealAtomInfo";
img[1]="images/brs/br0079.jpg"; link[1]="https://t.me/RealAtomInfo"; alt[0]="Телеграм-канал RealAtomInfo";
img[2]="images/brs/br0079.jpg"; link[2]="https://t.me/RealAtomInfo"; alt[0]="Телеграм-канал RealAtomInfo";

<!--document.write('<center>');-->
<!--for(i=0;i<imgprint;i++){-->
<!--document.write('<a href="'+link[ran[i]]+'" target="_blank">');-->
<!--document.write('<img border=1 vspace=6 src="'+img[ran[i]]+'"'); document.write('alt="'+alt[ran[i]]+'"></a></center>');-->
<!--}-->
<!--document.write('</center>');-->