var subst_1 = new Image (170, 23);
var subst_2 = new Image (170, 23);
var subst_3 = new Image (170, 23);
var subst_4 = new Image (170, 23);

var subst_5 = new Image (227,22);
var subst_6 = new Image (227,22);
var subst_7 = new Image (227,22);
var subst_8 = new Image (227,22);


var orig_1  = new Image (170, 23);
var orig_2  = new Image (170, 23);
var orig_3  = new Image (170, 23);
var orig_4  = new Image (170, 23);

var orig_5 = new Image (227,22);
var orig_6 = new Image (227,22);
var orig_7 = new Image (227,22);
var orig_8 = new Image (227,22);


subst_1.src = "h2.png";
subst_2.src = "e2.png";
subst_3.src = "d2.png";
subst_4.src = "l2.png";

subst_5.src = "bnoche_bajar-2.png";
subst_6.src = "bnoche_enviar-2.png";
subst_7.src = "bnoche_muestra-2.png";
subst_8.src = "bnoche_pedir-2.png";


orig_1.src  = "h1.png";
orig_2.src  = "e1.png";
orig_3.src  = "d1.png";
orig_4.src  = "l1.png";

orig_5.src = "bnoche_bajar-1.png";
orig_6.src = "bnoche_enviar-1.png";
orig_7.src = "bnoche_muestra-1.png";
orig_8.src = "bnoche_pedir-1.png";


function canviar (numero)		
			{
			if (numero==1) document.images ["simbol-1"].src = subst_1.src;
			if (numero==2) document.images ["simbol-2"].src = subst_2.src;
			if (numero==3) document.images ["simbol-3"].src = subst_3.src;
			if (numero==4) document.images ["simbol-4"].src = subst_4.src;
			
			if (numero==5) document.images ["simbol-5"].src = subst_5.src;
			if (numero==6) document.images ["simbol-6"].src = subst_6.src;
			if (numero==7) document.images ["simbol-7"].src = subst_7.src;
			if (numero==8) document.images ["simbol-8"].src = subst_8.src;
			}

function renovar (numero)
			{
			if (numero==1) document.images ["simbol-1"].src=orig_1.src;
			if (numero==2) document.images ["simbol-2"].src=orig_2.src;
			if (numero==3) document.images ["simbol-3"].src=orig_3.src;
			if (numero==4) document.images ["simbol-4"].src=orig_4.src;
			
			if (numero==5) document.images ["simbol-5"].src = orig_5.src;
			if (numero==6) document.images ["simbol-6"].src = orig_6.src;
			if (numero==7) document.images ["simbol-7"].src = orig_7.src;
			if (numero==8) document.images ["simbol-8"].src = orig_8.src;
			}