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
	 
	 button19 = new Image
     button20 = new Image
	 
	 button21 = new Image
     button22 = new Image
	 
	 button23 = new Image
     button24 = new Image
	 
	 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
	 
	 button37 = new Image
     button38 = new Image
	 
	 button39 = new Image
     button40 = new Image
	 
	 
	 	 
     button1.src = 'images/home.jpg'
     button2.src = 'images/home-hvr.jpg'
	 
	 button3.src = 'images/we-do.jpg'
     button4.src = 'images/we-do-hvr.jpg'
	 
	 button5.src = 'images/products.jpg'
     button6.src = 'images/products-hvr.jpg'
	 
	 button7.src = 'images/design.jpg'
     button8.src = 'images/design-hvr.jpg'
	 
	 button9.src = 'images/regulations.jpg'
     button10.src = 'images/regulations-hvr.jpg'
	 
	 button11.src = 'images/technical.jpg'
     button12.src = 'images/technical-hvr.jpg'
	 
	 button13.src = 'images/about.jpg'
     button14.src = 'images/about-hvr.jpg'
	 
	 button15.src = 'images/contact.jpg'
     button16.src = 'images/contact-hvr.jpg'
	 
	 button17.src = 'images/links.jpg'
     button18.src = 'images/links-hvr.jpg'
	 
	 button19.src = 'images/specifiers.jpg'
     button20.src = 'images/specifiers-hvr.jpg'
	 
	 button21.src = 'images/installers.jpg'
     button22.src = 'images/installers-hvr.jpg'
	 
	 button23.src = 'images/contractors.jpg'
     button24.src = 'images/contractors-hvr.jpg'
	 
	 button25.src = 'images/owners.jpg'
     button26.src = 'images/owners-hvr.jpg'
	 
	 button27.src = 'images/literarure.jpg'
     button28.src = 'images/literarure-hvr.jpg'
	 
	 button29.src = 'images/contact1.jpg'
     button30.src = 'images/contact1-hvr.jpg'
	 
	 button31.src = 'images/view.jpg'
     button32.src = 'images/view-hover.jpg'
	 
	 button33.src = 'images/commercial.jpg'
     button34.src = 'images/commercial-hover.jpg'
	 
	 button35.src = 'images/view1.jpg'
     button36.src = 'images/view1-hover.jpg'
	 
	 button37.src = 'images/domestic.jpg'
     button38.src = 'images/domestic-hover.jpg'
	 
	 button39.src = 'images/quote2.png'
     button40.src = 'images/quote2-hvr.png'
 }
 
 
 
 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";
}