var capaActiva="";
var infoVista="Info1";

function vistaCapa(nomCapa,accio) {
if (ns4) {
   document.layers[nomCapa].visibility = accio;
}
if (ie4) {
   document.all[nomCapa].style.visibility = accio;
}
if (standard) {
   document.getElementById(nomCapa).style.visibility = accio;
}
}

function ensenya(nom) {
	if (capaActiva != '' && capaActiva != nom) {vistaCapa(capaActiva,"hidden")}
	vistaCapa(nom,"visible")
	vistaCapa("foramenu","visible")	
	capaActiva=nom;
}

function amaga() {
	vistaCapa(capaActiva,"hidden")
	vistaCapa("foramenu","hidden")		
}

function mostraInfo(quina) {
	if (infoVista != quina) {
	vistaCapa(infoVista,"hidden")
	vistaCapa(quina,"visible")
	infoVista=quina;
	}
}

function preLoad(objecte,arxiu) {
	for (var i=0; i<preLoad.arguments.length; i=i+2) {
		eval(preLoad.arguments[i] + "= new Image()")
		isrc=preLoad.arguments[i+1]
		eval(preLoad.arguments[i] + ".src = '"+isrc+"'")
	}
} 

function canviaImatge (nomCapa,nomImatge,arxiu){
if (ns4) {
	if (nomCapa != "") {
    eval("document.layers."+nomCapa+".document.images['"+nomImatge+"'].src="+arxiu);
	} else {
    eval("document.images['"+nomImatge+"'].src="+arxiu);
	}
}
if (ie4) {
 	eval("document.images['"+nomImatge+"'].src="+arxiu);
}
if (standard) {
 	eval("document.images['"+nomImatge+"'].src="+arxiu);
}
}
function popup (tamanyX, tamanyY, adre, nom, posX, posY, attr) {
				var x=(screen.width-tamanyX) * posX / 100;
                var y=(screen.height-tamanyY) * posY / 100;
                if (attr=="") {attr='resizable=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0'}

                finestra=open(adre,nom,attr+',width='+tamanyX+',height='+tamanyY+',left='+x+',top='+y+',screenX='+x+',screenY='+y+'');
                if (mac && !ns4) {finestra.moveTo(x,y)}
}
preLoad("caraLo","img/caraLo.gif","caraHi","img/caraHi.gif","descLo","img/descLo.gif","descHi","img/descHi.gif")