empre_on = new Image(128,128);
empre_on.src = "iconos/bt-empre-on.gif";
empre_of = new Image(128,128);
empre_of.src = "iconos/bt-empre-of.gif";

heral_on = new Image(128,128);
heral_on.src = "iconos/bt-herldica-on.gif";
heral_of = new Image(128,128);
heral_of.src = "iconos/bt-herldica-of.gif";

perga_on = new Image(128,128);
perga_on.src = "iconos/bt-perga-on.gif";
perga_of = new Image(128,128);
perga_of.src = "iconos/bt-perga-of.gif";

insig_on = new Image(128,128);
insig_on.src = "iconos/bt-insig-on.gif";
insig_of = new Image(128,128);
insig_of.src = "iconos/bt-insig-of.gif";

bronce_on = new Image(128,128);
bronce_on.src = "iconos/bt-bronce-on.gif";
bronce_of = new Image(128,128);
bronce_of.src = "iconos/bt-bronce-of.gif";

ceramica_on = new Image(128,128);
ceramica_on.src = "iconos/bt-ceramica-on.gif";
ceramica_of = new Image(128,128);
ceramica_of.src = "iconos/bt-ceramica-of.gif";

trofeos_on = new Image(128,128);
trofeos_on.src = "iconos/bt-trofeos-on.gif";
trofeos_of = new Image(128,128);
trofeos_of.src = "iconos/bt-trofeos-of.gif";

borda_on = new Image(128,128);
borda_on.src = "iconos/bt-borda-on.gif";
borda_of = new Image(128,128);
borda_of.src = "iconos/bt-borda-of.gif";

contac_on = new Image(128,128);
contac_on.src = "iconos/bt-contac-on.gif";
contac_of = new Image(128,128);
contac_of.src = "iconos/bt-contac-of.gif";

home_on = new Image(128,128);
home_on.src = "iconos/bt-home-on.gif";
home_of = new Image(128,128);
home_of.src = "iconos/bt-home-of.gif";

function img_on(imgName)
{
	x = eval(imgName + "_on.src");
	document[imgName].src = x;
}

function img_of(imgName)
{
	x = eval(imgName + "_of.src");
	document[imgName].src = x;
}