if (document.images)
{
pic1= new Image(81,35); 
pic1.src="images/nav-home-ov.jpg";
pic2= new Image(112,35); 
pic2.src="images/nav-about-ov.jpg";
pic3= new Image(142,35); 
pic3.src="images/nav-services-ov.jpg";
pic4= new Image(150,35); 
pic4.src="images/nav-health-ov.jpg";
pic5= new Image(115,35); 
pic5.src="images/nav-nutrition-ov.jpg";
pic6= new Image(140,35); 
pic6.src="images/nav-testimonials-ov.jpg";
pic7= new Image(94,35); 
pic7.src="images/nav-prices-ov.jpg";
pic8= new Image(126,35); 
pic8.src="images/nav-contact-ov.jpg";
}