//Function to preload and swap top-navigation and slideshow rollover buttons
if (document.images) {
	homeOff = new Image
	homeOver = new Image
	collOff = new Image
	collOver = new Image
	exhiOff = new Image
	exhiOver = new Image
	progOff = new Image
	progOver = new Image
	suppOff = new Image
	suppOver = new Image
	visiOff = new Image
	visiOver = new Image

	collOn = new Image
	collHover = new Image
	exhiOn = new Image
	exhiHover = new Image
	progOn = new Image
	progHover = new Image
	suppOn = new Image
	suppHover = new Image
	visiOn = new Image
	visiHover = new Image

	backOff = new Image
	backOver = new Image
	nextOff = new Image
	nextOver = new Image
	stopOff = new Image
	stopOver = new Image

	homeOff.src = "images/nav_home_off.gif"
	homeOver.src = "images/nav_home_over.gif"
	collOff.src = "images/nav_coll_off.gif"
	collOver.src = "images/nav_coll_over.gif"
	exhiOff.src = "images/nav_exhi_off.gif"
	exhiOver.src = "images/nav_exhi_over.gif"
	progOff.src = "images/nav_prog_off.gif"
	progOver.src = "images/nav_prog_over.gif"
	suppOff.src = "images/nav_supp_off.gif"
	suppOver.src = "images/nav_supp_over.gif"
	visiOff.src = "images/nav_visi_off.gif"
	visiOver.src = "images/nav_visi_over.gif"

	collOn.src = "images/nav_coll_on.gif"
	collHover.src = "images/nav_coll_on_hover.gif"
	exhiOn.src = "images/nav_exhi_on.gif"
	exhiHover.src = "images/nav_exhi_on_hover.gif"
	progOn.src = "images/nav_prog_on.gif"
	progHover.src = "images/nav_prog_on_hover.gif"
	suppOn.src = "images/nav_supp_on.gif"
	suppHover.src = "images/nav_supp_on_hover.gif"
	visiOn.src = "images/nav_visi_on.gif"
	visiHover.src = "images/nav_visi_on_hover.gif"

	backOff.src = "images/slide_back_teal.gif"
	backOver.src = "images/slide_back_gold.gif"
	nextOff.src = "images/slide_next_teal.gif"
	nextOver.src = "images/slide_next_gold.gif"
	stopOff.src = "images/slide_stop_teal.gif"
	stopOver.src = "images/slide_stop_gold.gif"
}

else {
	homeOff = ""
	homeOver = ""
	document.homeRO = ""
	collOff = ""
	collOver = ""
	document.collRO = ""
	exhiOff = ""
	exhiOver = ""
	document.exhiRO = ""
	progOff = ""
	progOver = ""
	document.progRO = ""
	suppOff = ""
	suppOver = ""
	document.suppRO = ""
	visiOff = ""
	visiOver = ""
	document.visiRO = ""

	collOn = ""
	collHover = ""
	document.collonRO = ""
	exhiOn = ""
	exhiHover = ""
	document.exhionRO = ""
	progOn = ""
	progHover = ""
	document.progonRO = ""
	suppOn = ""
	suppHover = ""
	document.supponRO = ""
	visiOn = ""
	visiHover = ""
	document.visionRO = ""

	backOff = ""
	backOver = ""
	document.backRO = ""
	nextOff = ""
	nextOver = ""
	document.nextRO = ""
	stopOff = ""
	stopOver = ""
	document.stopRO = ""
}