if (document.images) { 

var img10on = new Image();
img10on.src = "images/samplebtn_ccc_on.gif";
var img10off = new Image();
img10off.src = "images/samplebtn_ccc.gif";

var img11on = new Image();
img11on.src = "images/samplebtn_cbc_on.gif";
var img11off = new Image();
img11off.src = "images/samplebtn_cbc.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'); 
} 

}