// 左メニュー

if (document.images) { 

// 中間処理業務
var img0on = new Image();
img0on.src = "images/btn_chsg02.jpg";
var img0off = new Image();
img0off.src = "images/btn_chsg01.jpg";
// 一般廃棄物収集運搬業務
var img1on = new Image();
img1on.src = "images/btn_ipnsg02.jpg";
var img1off = new Image();
img1off.src = "images/btn_ipnsg01.jpg";
// 産業廃棄物収集運搬業務
var img2on = new Image();
img2on.src = "images/btn_spnsg02.jpg";
var img2off = new Image();
img2off.src = "images/btn_spnsg01.jpg";
// 不要品買い取り
var img3on = new Image();
img3on.src = "images/btn_fybuy02.jpg";
var img3off = new Image();
img3off.src = "images/btn_fybuy01.jpg";
// 廃棄文書
var img4on = new Image();
img4on.src = "images/btn_hkbun02.jpg";
var img4off = new Image();
img4off.src = "images/btn_hkbun01.jpg";


// 中央メニュー

// 許可エリア
var img5on = new Image();
img5on.src = "images/btn_karea02.gif";
var img5off = new Image();
img5off.src = "images/btn_karea01.gif";
// 作業案内
var img6on = new Image();
img6on.src = "images/btn_sguide02.gif";
var img6off = new Image();
img6off.src = "images/btn_sguide01.gif";
// 事業案内
var img7on = new Image();
img7on.src = "images/btn_jguide02.gif";
var img7off = new Image();
img7off.src = "images/btn_jguide01.gif";

} 

// MouseOver
function On(name) { 

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

} 

// MouseOut
function Off(name) { 

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

}