function preloader() 
{
     // counter
     var i = 0;

     // create object
     imageObj = new Image();
     path = "/yma/css/images/prodotti/";

     // set image list
     images = new Array();
     images[0]= path + "_biancodi-over.jpg";
     images[1]= path + "_altaqualita-over.jpg";
     images[2]= path + "_fresco-over.jpg";
     images[3]= path + "_uht-over.jpg";
     images[4]= path + "_panna-over.jpg"
     images[5]= path + "_yogurt-over.jpg"
     images[6]= path + "_yogurt500-over.jpg"
          

     // start preloading
     for(i=0; i<=6; i++)
     {
          imageObj.src=images[i];
     }
}