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 (170, 23);
var subst_6 = new Image (170, 23);
var subst_7 = new Image (170, 23);
var subst_8 = new Image (170, 23);
var subst_9 = new Image (170, 23);

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 (170, 23);
var orig_6  = new Image (170, 23);
var orig_7  = new Image (170, 23);
var orig_8  = new Image (170, 23);
var orig_9  = new Image (170, 23);

subst_1.src = "brat-1.gif";
subst_2.src = "brat-2.gif";
subst_3.src = "brat-3.gif";
subst_4.src = "brat-4.gif";
subst_5.src = "brat-5.gif";
subst_6.src = "brat-6.gif";
subst_7.src = "brat-7.gif";
subst_8.src = "brat-8.gif";
subst_9.src = "brat-9.gif";

orig_1.src  = "boto-1.gif";
orig_2.src  = "boto-2.gif";
orig_3.src  = "boto-3.gif";
orig_4.src  = "boto-4.gif";
orig_5.src  = "boto-5.gif";
orig_6.src  = "boto-6.gif";
orig_7.src  = "boto-7.gif";
orig_8.src  = "boto-8.gif";
orig_9.src  = "boto-9.gif";

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;
			if (numero==9) document.images ["simbol-9"].src = subst_9.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;
			if (numero==9) document.images ["simbol-9"].src=orig_9.src;
			}