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
	
	/*top navi ends here*/	
	
     button9 = new Image
     button10 = new Image
	 
	 button11 = new Image
     button12 = new Image
	 
	 button13 = new Image
     button14 = new Image
	
	/*bottom 3 boxes ends here*/	
	 	 
   	 button15 = new Image
     button16 = new Image
	 
	 button17 = new Image
     button18 = new Image
	 
	 button19 = new Image
     button20 = new Image
	 
	 button21 = new Image
     button22 = new Image
	 
	 button23 = new Image
     button24 = new Image
	 
	 
	/*domestic dropdown ends here*/	
	 
	 button25 = new Image
     button26 = new Image
	 
	 button27 = new Image
     button28 = new Image
	 
	 button29 = new Image
     button30 = new Image
	 
	 button31 = new Image
     button32 = new Image
	 
	 button33 = new Image
     button34 = new Image
	 
	 button35 = new Image
     button36 = new Image
	 
	 
	/*commercial dropdown ends here*/		 
	 	 
	 	 
     button1.src = 'images/home.jpg'
     button2.src = 'images/home-hvr.jpg'
	 
	 button3.src = 'images/domestic.jpg'
     button4.src = 'images/domestic-hvr.jpg'
	 
     button5.src = 'images/comercial.jpg'
     button6.src = 'images/comercial-hvr.jpg'
	 
     button7.src = 'images/contact.jpg'
     button8.src = 'images/contact-hvr.jpg'
	 
	 /*top navi ends here*/	
	 
     button9.src = 'images/carpet-box.jpg'
     button10.src = 'images/carpet-box-hvr.jpg'
	 
	 button11.src = 'images/office-cleaning-box.jpg'
     button12.src = 'images/office-cleaning-box-hvr.jpg'
	 
	 button13.src = 'images/contactus-box.jpg'
     button14.src = 'images/contactus-box-hvr.jpg'
	 
	  /*bottom 3 boxes ends here*/	
	  
	 button15.src = 'images/oven.jpg'
     button16.src = 'images/oven-hvr.jpg'
	 
	 button17.src = 'images/carpet.jpg'
     button18.src = 'images/carpet-hvr.jpg'
	 
	 button19.src = 'images/upholstery.jpg'
     button20.src = 'images/upholstery-hvr.jpg'
	 
	 button21.src = 'images/leather.jpg'
     button22.src = 'images/leather-hvr.jpg'
	 
	 button23.src = 'images/tennancy.jpg'
     button24.src = 'images/tennancy-hvr.jpg'
	 
	/*domestic dropdown ends here*/	
	
	 button25.src = 'images/industrial-kitchen.jpg'
     button26.src = 'images/industrial-kitchen-hvr.jpg'
	 
	 button27.src = 'images/builder.jpg'
     button28.src = 'images/builder-hvr.jpg'
	 
	 button29.src = 'images/office-work-place.jpg'
     button30.src = 'images/office-work-place-hvr.jpg'
	 
	 button31.src = 'images/carpet-upholstery.jpg'
     button32.src = 'images/carpet-upholstery-hvr.jpg'
	 
	 button33.src = 'images/hard-floor.jpg'
     button34.src = 'images/hard-floor-hvr.jpg'
	 
	 button35.src = 'images/estate-agents.jpg'
     button36.src = 'images/estate-agents-hvr.jpg'
	 
	 /*commercial dropdown ends here*/	
	
		
}

function expand(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);

  td.className = "menuHover";
  d.className = "menuHover";
}

function collapse(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);

  td.className = "menuNormal";
  d.className = "menuNormal";
}