function imgPreload(){   // counter
     var i = 0;
     // create object
     imageObj = new Image();
     // set image list
     images = new Array();
     images[0]="images/bar_1_up.jpg"
     images[1]="images/bar_2_up.jpg"
     images[2]="images/bar_3_up.jpg"
     images[3]="images/web_1_up.jpg"
		 images[4]="images/dev_1_up.jpg"
		 images[5]="images/ecom_1_up.jpg"
     // start preloading
     for(i=0; i<=5; i++) 
     {
          imageObj.src=images[i];
     }
}