function preloader() 
                        {
                             // counter
                             var i = 0;
                        
                        
                             // create object
                             imageObj = new Image();
                        
                        
                             // set image list
                             images = new Array();
                             images[0]="be-bg.jpg"
                             images[1]="wisdom-bg.jpg"
                        
                             // start preloading
                             for(i=0; i<=3; i++) 
                             {
                                  imageObj.src=images[i];
                             }
    
                        }