var randomImage= new Array 
randomImage[0]="CivilEngineering/1.jpg"; 
randomImage[1]="CivilEngineering/2.jpg"; 
randomImage[2]="CivilEngineering/3.jpg"; 
randomImage[3]="CivilEngineering/4.jpg"; 
randomImage[4]="CivilEngineering/5.jpg";
randomImage[5]="CivilEngineering/6.jpg";  
randomImage[6]="CivilEngineering/7.jpg";  
randomImage[7]="CivilEngineering/8.jpg";  
randomImage[8]="CivilEngineering/9.jpg";