browser = (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 )) || ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 )))

if ( browser) {

pic3a = new Image()
pic3a.src = "images/nav/booking_up.gif"
pic3b = new Image()
pic3b.src = "images/nav/booking_over.gif"

pic4a = new Image()
pic4a.src = "images/nav/contact_up.gif"
pic4b = new Image()
pic4b.src = "images/nav/contact_over.gif"

pic1a = new Image()
pic1a.src = "images/nav/overview_up.gif"
pic1b = new Image()
pic1b.src = "images/nav/overview_over.gif"

pic2a = new Image()
pic2a.src = "images/nav/plan_up.gif"
pic2b = new Image()
pic2b.src = "images/nav/plan_over.gif"
}

function rollON(img,sw) {
	if(document.images && currSection!=img) {
		imgObj=eval(img+sw);
		document.images[img].src=imgObj.src;
	}
}

function init() {
	document.images[currSection].src=eval(currSection+"b.src")
}