function atRandomImg(){ 
   atImg=new Array(); 
   atImg[0] =' <a href ="10.html">';
   atImg[0]+=' <img src="images/1.jpg" width="157" height="157" border="0" alt="Dackpond"></a>'; 
   atImg[1] =' <a href ="10.html">'; 
   atImg[1]+=' <img src="images/2.jpg" width="157" height="157" border="0" alt="Larry"></a>'; 
   atImg[2] =' <a href ="10.html">'; 
   atImg[2]+=' <img src="images/3.jpg" width="157" height="157" border="0" alt="Heavy g"></a>'; 
   atImg[3] =' <a href ="10.html">'; 
   atImg[3]+=' <img src="images/4.jpg" width="157" height="157" border="0" alt="Christo"></a>';  

   var imgNum=atImg.length; 
   var r=Math.floor(Math.random()*imgNum); 
   document.write(atImg[r]); 
   }