function swap(img) {
 if(document.images[img]) {
	 document.images[img].src = eval(img+"_on.src")
	}
}
function swapback(img) {
 if(document.images[img]) {
	 document.images[img].src = eval(img+"_off.src")
	}
}
function openDisclaimer() {
 disclaimerWindow = window.open("disclaimer.html","disclaimer","width=418,height=430,scrollbars=no,resizable=no")
	disclaimerWindow.focus()
}
home_off = new Image()
home_on = new Image()
home_off.src = "images/home_btn_off.gif"
home_on.src = "images/home_btn_over.gif"

intro_off = new Image()
intro_on = new Image()
intro_off.src = "images/intro_btn_off.gif"
intro_on.src = "images/intro_btn_over.gif"

about_off = new Image()
about_on = new Image()
about_off.src = "images/aboutus_btn_off.jpg"
about_on.src = "images/aboutus_btn_over.jpg"

services_off = new Image()
services_on = new Image()
services_off.src = "images/services_btn_off.jpg"
services_on.src = "images/services_btn_over.jpg"

clients_off = new Image()
clients_on = new Image()
clients_off.src = "images/clients_btn_off.jpg"
clients_on.src = "images/clients_btn_over.jpg"

casestudies_off = new Image()
casestudies_on = new Image()
casestudies_off.src = "images/casestudies_btn_off.jpg"
casestudies_on.src = "images/casestudies_btn_over.jpg"

showreel_off = new Image()
showreel_on = new Image()
showreel_off.src = "images/showreel_btn_off.jpg"
showreel_on.src = "images/showreel_btn_over.jpg"

pricing_off = new Image()
pricing_on = new Image()
pricing_off.src = "images/pricing_btn_off.jpg"
pricing_on.src = "images/pricing_btn_over.jpg"

contactus_off = new Image()
contactus_on = new Image()
contactus_off.src = "images/contactus_btn_off.jpg"
contactus_on.src = "images/contactus_btn_over.jpg"