/////////////////////////////////////////////////////////////////////// スペシャルプラン 

if (document.images) { 

var img01on = new Image();
img01on.src = "img/top/on_session_01.gif"; 
var img01off = new Image();
img01off.src = "img/top/off_session_01.gif"; 
 
var img02on = new Image();
img02on.src = "img/top/on_session_02.gif"; 
var img02off = new Image();
img02off.src = "img/top/off_session_02.gif"; 

var img03on = new Image();
img03on.src = "img/top/on_session_03.gif"; 
var img03off = new Image();
img03off.src = "img/top/off_session_03.gif"; 
 
var img04on = new Image();
img04on.src = "img/top/on_session_04.gif"; 
var img04off = new Image();
img04off.src = "img/top/off_session_04.gif"; 



} 
// ポイント時の処理 
function On(name) { 

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

} 
// 放した時の処理 
function Off(name) { 

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

}