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
	 
	 button17 = new Image
     button18 = new Image
	 
	 	 
     button1.src = 'http://doorsonline.in/images/home.png'
     button2.src = 'http://doorsonline.in/images/home-hvr.png'
	 
	 button3.src = 'http://doorsonline.in/images/contact.png'
     button4.src = 'http://doorsonline.in/images/contact-hvr.png'
	 
	 button5.src = 'http://doorsonline.in/images/new.jpg'
     button6.src = 'http://doorsonline.in/images/new-hvr.jpg'
	 
	 button7.src = 'http://doorsonline.in/images/network.jpg'
     button8.src = 'http://doorsonline.in/images/network-hvr.jpg'
	 
	 button9.src = 'http://doorsonline.in/images/hardware.jpg'
     button10.src = 'http://doorsonline.in/images/hardware-hvr.jpg'
	 
	 button11.src = 'http://doorsonline.in/images/sales.jpg'
     button12.src = 'http://doorsonline.in/images/sales-hvr.jpg'
	 
	 button13.src = 'http://doorsonline.in/images/management.jpg'
     button14.src = 'http://doorsonline.in/images/management-hvr.jpg'
	 
	 button15.src = 'http://doorsonline.in/images/integration.jpg'
     button16.src = 'http://doorsonline.in/images/integration-hvr.jpg'
	 
	 button17.src = 'http://doorsonline.in/images/contact-details.png'
     button18.src = 'http://doorsonline.in/images/contact-details-hvr.png'
}