img1off = new Image()
img1off.src = "images/about_off.gif"
img2off = new Image()
img2off.src = "images/photo_off.gif"
img3off = new Image()
img3off.src = "images/team_off.gif"
img4off = new Image()
img4off.src = "images/contact_off.gif"



img1on = new Image()
img1on.src = "images/about_on.gif"
img2on = new Image()
img2on.src = "images/photo_on.gif"
img3on = new Image()
img3on.src = "images/team_on.gif"
img4on = new Image()
img4on.src = "images/contact_on.gif"




function imageOn(imgName) {
	imgOn = eval(imgName + "on.src")
	document[imgName].src = imgOn
}

function imageOff(imgName) {
	imgOff = eval(imgName + "off.src")
	document[imgName].src = imgOff
}