if (document.images) {
   
     button1 = new Image
     button2 = new Image
	 
     button3 = new Image
     button4 = new Image
	 
     button5 = new Image
     button6 = new Image
	 
	 
	 	 
     button1.src = 'images/cart.jpg'
     button2.src = 'images/cart-hvr.jpg'
	 
	 button3.src = 'images/checkout.jpg'
     button4.src = 'images/checkout-hvr.jpg'
	 
	 button5.src = 'images/freinds.jpg'
     button6.src = 'images/freinds-hvr.jpg'
 }