hairon = new Image();
hairon.src = "images/hair_on.gif";
hairoff = new Image();
hairoff.src = "images/hair_off.gif";

skinon = new Image();
skinon.src = "images/skin_on.gif";
skinoff = new Image();
skinoff.src = "images/skin_off.gif";

anaon = new Image();
anaon.src = "images/ana_on.gif";
anaoff = new Image();
anaoff.src = "images/ana_off.gif";

ginaon = new Image();
ginaon.src = "images/gina_on.gif";
ginaoff = new Image();
ginaoff.src = "images/gina_off.gif";

trishon = new Image();
trishon.src = "images/trish_on.gif";
trishoff = new Image();
trishoff.src = "images/trish_off.gif";

lyndaon = new Image();
lyndaon.src = "images/lynda_on.gif";
lyndaoff = new Image();
lyndaoff.src = "images/lynda_off.gif";

// On function
function imgAct(imgName) {
    document[imgName].src = eval(imgName + "on.src");
}

// Off function
function imgInact(imgName) {
    document[imgName].src = eval(imgName + "off.src");
}