//Function to preload and swap rollover buttons in Resources page
if (document.images) {
	calcsOff = new Image
	calcsOver = new Image
	paperOff = new Image
	paperOver = new Image
	wordsOff = new Image
	wordsOver = new Image
	linksOff = new Image
	linksOver = new Image

	calcsOff.src = "assets/res_calcs_off.jpg"
	calcsOver.src = "assets/res_calcs_over.jpg"
	paperOff.src = "assets/res_history_off.jpg"
	paperOver.src = "assets/res_history_over.jpg"
	wordsOff.src = "assets/res_glossary_off.jpg"
	wordsOver.src = "assets/res_glossary_over.jpg"
	linksOff.src = "assets/res_links_off.jpg"
	linksOver.src = "assets/res_links_over.jpg"
}

else {
	calcsOff = ""
	calcsOver = ""
	document.calcsRO = ""
	paperOff = ""
	paperOver = ""
	document.paperRO = ""
	wordsOff = ""
	wordsOver = ""
	document.wordsRO = ""
	linksOff = ""
	linksOver = ""
	document.linksRO = ""
}