if (document.images) {
	servicesOff = new Image
	servicesOn = new Image
	voloppsOff = new Image
	voloppsOn = new Image
	newsOff = new Image
	newsOn = new Image
	aboutOff = new Image
	aboutOn = new Image

	servicesOff.src = "images/menu/services.jpg"
	servicesOn.src = "images/menu/servicesh.jpg"
	voloppsOff.src = "images/menu/volopps.jpg"
	voloppsOn.src = "images/menu/voloppsh.jpg"
	newsOff.src = "images/menu/news.jpg"
	newsOn.src = "images/menu/newsh.jpg"
	aboutOff.src = "images/menu/about.jpg"
	aboutOn.src = "images/menu/abouth.jpg"
}

function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src=eval(newImg + ".src")
	}
}