if (document.images) {

	homeOff = new Image
	homeOn = new Image
	aboutOff = new Image
	aboutOn = new Image
	projectdocsOff = new Image
	projectdocsOn = new Image
	newseventsOff = new Image
	newseventsOn = new Image

	homeOff.src = "http://cairo.paradigm.ac.uk/images/home-off.gif"
	homeOn.src = "http://cairo.paradigm.ac.uk/images/home-on.gif"
	aboutOff.src = "http://cairo.paradigm.ac.uk/images/about-off.gif"
	aboutOn.src = "http://cairo.paradigm.ac.uk/images/about-on.gif"
	projectdocsOff.src = "http://cairo.paradigm.ac.uk/images/docs-off.gif"
	projectdocsOn.src = "http://cairo.paradigm.ac.uk/images/docs-on.gif"
	newseventsOff.src = "http://cairo.paradigm.ac.uk/images/news-off.gif"
	newseventsOn.src = "http://cairo.paradigm.ac.uk/images/news-on.gif"
	}

else {
	homeOff = ""
	homeOn = ""
	aboutOff = ""
	aboutOn = ""
	projectdocsOff = ""
	projectdocsOn = ""
	newseventsOff = ""
	newseventsOn = ""

	document.home = ""
	document.about = ""
	document.projectdocs = ""
	document.newsevents = ""
	}