if (document.images) {
	homeOff = new Image
	homeOn = new Image

	homeOff.src = 'images/but_home.gif'
	homeOn.src = 'images/but_home_on.gif'
}
else {
	homeOff = ""
	homeOn = ""
	document.home = ""

}
if (document.images) {
	pracOff = new Image
	pracOn = new Image

	pracOff.src = 'images/but_prac.gif'
	pracOn.src = 'images/but_prac_on.gif'
}
else {
	pracOff = ""
	pracOn = ""
	document.prac = ""

}
if (document.images) {
	clientsOff = new Image
	clientsOn = new Image

	clientsOff.src = 'images/but_clients.gif'
	clientsOn.src = 'images/but_clients_on.gif'
}
else {
	clientsOff = ""
	clientsOn = ""
	document.clients = ""

}
if (document.images) {
	contOff = new Image
	contOn = new Image

	contOff.src = 'images/but_cont.gif'
	contOn.src = 'images/but_cont_on.gif'
}
else {
	contOff = ""
	contOn = ""
	document.cont = ""

}
if (document.images) {
	listOff = new Image
	listOn = new Image

	listOff.src = 'images/but_list.gif'
	listOn.src = 'images/but_list_on.gif'
}
else {
	listOff = ""
	listOn = ""
	document.list = ""

}