if (document.images) { 


// 設定開始（使用する画像を設定） 

// about 
var img1on = new Image();
img1on.src = "http://kazenet.com/senmon/test/img/about_on.gif"; // 通常の画像
var img1off = new Image();
img1off.src = "http://kazenet.com/senmon/test/img/about_off.gif"; // 通常の画像

// real
var img2on = new Image();
img2on.src = "http://kazenet.com/senmon/test//img/real_on.gif";
var img2off = new Image();
img2off.src = "http://kazenet.com/senmon/test//img/real_off.gif";

// rpg
var img3on = new Image();
img3on.src = "http://kazenet.com/senmon/test/img/rpg_on.gif";
var img3off = new Image();
img3off.src = "http://kazenet.com/senmon/test/img/rpg_off.gif";

// variety
var img4on = new Image();
img4on.src = "http://kazenet.com/senmon/test/img/variety_on.gif";
var img4off = new Image();
img4off.src = "http://kazenet.com/senmon/test/img/variety_off.gif";

// new
var img5on = new Image();
img5on.src = "http://kazenet.com/senmon/test/img/new_on.gif";
var img5off = new Image();
img5off.src = "http://kazenet.com/senmon/test/img/new_off.gif";

// history
var img6on = new Image();
img6on.src = "http://kazenet.com/senmon/test/img/history_on.gif";
var img6off = new Image();
img6off.src = "http://kazenet.com/senmon/test/img/history_off.gif";

// 設定終了 


} 

// 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'); 
} 

}