if (document.images) {
	var aboutn = new Image()
	aboutn.src = "/images/aboutn.gif"
	var abouta = new Image()
	abouta.src = "/images/abouta.gif"
	
	var competencyn = new Image()
	competencyn.src = "/images/competencyn.gif"
	var competencya = new Image()
	competencya.src = "/images/competencya.gif"
	
	var selfn = new Image()
	selfn.src = "/images/selfn.gif"
	var selfa = new Image()
	selfa.src = "/images/selfa.gif"
	
	var catalogn = new Image()
	catalogn.src = "/images/catalogn.gif"
	var cataloga = new Image()
	cataloga.src = "/images/cataloga.gif"
	
	var editn = new Image()
	editn.src = "/images/editn.gif"
	var edita = new Image()
	edita.src = "/images/edita.gif"
}

function act(imgName) {
	if (document.images) 
		document[imgName].src = eval(imgName + 'a.src')
}

function inact(imgName) {
	if (document.images)
		document[imgName].src = eval(imgName + 'n.src')
}