function random_imglink(){   
                var myimages=new Array()  
              myimages[0]="images/100.jpg"
               myimages[1]="images/200.jpg" 
            myimages[2]="images/300.jpg" 
              myimages[3]="images/400.jpg" 
               myimages[4]="images/500.jpg" 		
						 

						 
						 myimages.sort(function() {return 0.5 - Math.random();});
              document.write('<img id="rand" onload="fade(this, \'in\', 100, 2, 30);" src="'+myimages[0]+'" border=0></a>')
              }
              
              random_imglink()