function preloader() 
{
// counter
     var i = 0;
// create object
     imageObj = new Image();

// set image list
     images = new Array();
     images[0]="images/largest_fleet_banner.png"
     images[1]="images/service_area_banner.png"
     images[2]="images/experience_counts_banner.png"
     images[3]="images/life_is_a_highway_banner.png"
     

     // start preloading
     for(i=0; i<=3; i++) 
     {
          imageObj.src=images[i];
     }

}