// Image preload

if (document.images)
{
  pic1= new Image(220,90); 
  pic1.src="../img/sidebar/banner_usluge_on.gif";  

  pic2= new Image(220,90); ; 
  pic2.src="../img/sidebar/ponuda_on.gif"; 
  
  pic3= new Image(220,90);  
  pic3.src="../img/sidebar/proces_rada_on.gif"; 
  
}