if (document.images) { 
img1on = new Image(); 
img1on.src = "images/bon_001.gif"; 
img2on = new Image(); 
img2on.src = "images/bon_002.gif"; 

img1off = new Image(); 
img1off.src = "images/boff_001.gif"; 
img2off = new Image(); 
img2off.src = "images/boff_002.gif"; 

img3on = new Image(); 
img3on.src = "images/bon_003.gif"; 
img4on = new Image(); 
img4on.src = "images/bon_004.gif"; 

img5on = new Image(); 
img5on.src = "images/bon_005.gif"; 
img5off = new Image(); 
img5off.src = "images/boff_005.gif"; 


img3off = new Image(); 
img3off.src = "images/boff_003.gif";
img4off = new Image(); 
img4off.src = "images/boff_004.gif";

img6off = new Image(); 
img6off.src = "images/boff_006.gif";
img7off = new Image(); 
img7off.src = "images/boff_007.gif";
img8off = new Image(); 
img8off.src = "images/but_inte_off.gif";

img6on = new Image(); 
img6on.src = "images/bon_006.gif"; 
img7on = new Image(); 
img7on.src = "images/bon_007.gif"; 
img8on = new Image(); 
img8on.src = "images/but_inte_on.gif";



}

function imgOn(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "on.src");

}
}

function imgOff(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src");
}
}