if (document.images) { 

var img10on = new Image();
img10on.src = "../images/btn_normal_on.gif";
var img10off = new Image();
img10off.src = "../images/btn_normal.gif";

var img11on = new Image();
img11on.src = "../images/btn_oily_on.gif";
var img11off = new Image();
img11off.src = "../images/btn_oily.gif";

var img12on = new Image();
img12on.src = "../images/btn_dry_on.gif";
var img12off = new Image();
img12off.src = "../images/btn_dry.gif";

var img13on = new Image();
img13on.src = "../images/btn_dryoily_on.gif";
var img13off = new Image();
img13off.src = "../images/btn_dryoily.gif";


} 


function On(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'on.src'); 
} 

} 


function Off(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'off.src'); 
} 

}