if (document.images)
{
  pic1= new Image(800,294); 
  pic1.src="../images/main-back.jpg"; 

  pic2= new Image(247,66); 
  pic2.src="../images/mmx-logo.gif"; 

  pic3= new Image(194,30); 
  pic3.src="../images/contact-no.gif"; 
  
  pic4= new Image(800,115); 
  pic4.src="../images/mainsub-back.jpg"; 
}