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
     button1.src = 'buttons/btnhome.jpg'
     button2.src = 'buttons/btnhome2.jpg'
     button3.src = 'buttons/btnabt.jpg'
     button4.src = 'buttons/btnabt2.jpg'
     button5.src = 'buttons/btnact.jpg'
     button6.src = 'buttons/btnact2.jpg'
     button7.src = 'buttons/btnsrv.jpg'
     button8.src = 'buttons/btnsrv2.jpg'
     button9.src = 'buttons/btnlnks.jpg'
     button10.src = 'buttons/btnlnks2.jpg'
     button11.src = 'buttons/btncontct.jpg'
     button12.src = 'buttons/btncontct2.jpg'
}
function btn0up() 
{
document.home.src=button2.src
}
function btn0dwn() 
{
document.home.src=button1.src
}
function btn1up() 
{
document.aboutus.src=button4.src
}
function btn1dwn() 
{
document.aboutus.src=button3.src
}
function btn2up() 
{
document.activities.src=button6.src
}
function btn2dwn() 
{
document.activities.src=button5.src
}
function btn3up() 
{
document.services.src=button8.src
}
function btn3dwn() 
{
document.services.src=button7.src
}
function btn4up() 
{
document.links.src=button10.src
}
function btn4dwn() 
{
document.links.src=button9.src
}
function btn5up() 
{
document.contacts.src=button12.src
}
function btn5dwn() 
{
document.contacts.src=button11.src
}