if (document.images) {
   
     button1 = new Image
     button2 = new Image
	 
	 button3 = new Image
     button4 = new Image
	 
	 button5 = new Image
     button6 = new Image
	 
	 button7 = new Image
     button8 = new Image
	 
	 button9 = new Image
     button10 = new Image
	 
	 button11 = new Image
     button12 = new Image
	 
	 button13 = new Image
     button14 = new Image
	 
	 button15 = new Image
     button16 = new Image
	 
	 
	 	 
     button1.src = 'images/home.jpg'
     button2.src = 'images/home-hvr.jpg'
	 
	 button3.src = 'images/use.jpg'
     button4.src = 'images/use-hvr.jpg'
	 
	 button5.src = 'images/focus.jpg'
     button6.src = 'images/focus-hvr.jpg'
	 
	 button7.src = 'images/firm.jpg'
     button8.src = 'images/firm-hvr.jpg'
	 
	 button9.src = 'images/international.jpg'
     button10.src = 'images/international-hvr.jpg'
	 
	 button11.src = 'images/patent.jpg'
     button12.src = 'images/patent-hvr.jpg'
	 
	 button13.src = 'images/contact.jpg'
     button14.src = 'images/contact-hvr.jpg'
	 
	 button15.src = 'images/news.jpg'
     button16.src = 'images/news-hvr.jpg'
 }