if (document.images) { 

// 雑学ナビゲーション
var img36on = new Image();
img36on.src = "../images/talk_navi01_on.gif"; 
var img36off = new Image();
img36off.src = "../images/talk_navi01.gif";

var img37on = new Image();
img37on.src = "../images/talk_navi02_on.gif"; 
var img37off = new Image();
img37off.src = "../images/talk_navi02.gif";

var img38on = new Image();
img38on.src = "../images/talk_navi03_on.gif"; 
var img38off = new Image();
img38off.src = "../images/talk_navi03.gif";

var img39on = new Image();
img39on.src = "../images/talk_navi04_on.gif"; 
var img39off = new Image();
img39off.src = "../images/talk_navi04.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'); 
} 

}