img1on = new Image();                    
img1on.src = "images/wild_on.gif";
img1off = new Image();
img1off.src = "images/wild_off.gif";

img2on = new Image();                    
img2on.src = "images/kitchen_on.gif";
img2off = new Image();
img2off.src = "images/kitchen_off.gif";

img3on = new Image();                    
img3on.src = "images/curb_on.gif";
img3off = new Image();
img3off.src = "images/curb_off.gif";

img4on = new Image();                    
img4on.src = "images/ttp_on.gif";
img4off = new Image();
img4off.src = "images/ttp_off.gif";

img5on = new Image();                    
img5on.src = "images/breakout_on.gif";
img5off = new Image();
img5off.src = "images/breakout_off.gif";

img6on = new Image();                    
img6on.src = "images/spark_on.gif";
img6off = new Image();
img6off.src = "images/spark_off.gif";

img7on = new Image();                    
img7on.src = "images/straight_on.gif";
img7off = new Image();
img7off.src = "images/straight_off.gif";

img8on = new Image();                    
img8on.src = "images/concourse_on.gif";
img8off = new Image();
img8off.src = "images/concourse_off.gif";

img9on = new Image();                    
img9on.src = "images/chefs_on.gif";
img9off = new Image();
img9off.src = "images/chefs_off.gif";

img10on = new Image();                    
img10on.src = "images/montage_on.gif";
img10off = new Image();
img10off.src = "images/montage_off.gif";

img11on = new Image();                    
img11on.src = "images/peachtree_on.gif";
img11off = new Image();
img11off.src = "images/peachtree_off.gif";

img12on = new Image();                    
img12on.src = "images/wood_runners_on.gif";
img12off = new Image();
img12off.src = "images/wood_runners_off.gif";

img13on = new Image();                    
img13on.src = "images/color_splash_on.gif";
img13off = new Image();
img13off.src = "images/color_splash_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");
}