if(WinIE || MacIE || WinNN4 || WinNN6 || MacNN4 || MacNN6){
var img = new Array();
	img[0] = new Image(); img[0].src = "../common/img/bt_head_01_off.gif";
	img[1] = new Image(); img[1].src = "../common/img/bt_head_01_on.gif";
	img[2] = new Image(); img[2].src = "../common/img/bt_head_02_off.gif";
	img[3] = new Image(); img[3].src = "../common/img/bt_head_02_on.gif";
	img[4] = new Image(); img[4].src = "../common/img/bt_head_03_off.gif";
	img[5] = new Image(); img[5].src = "../common/img/bt_head_03_on.gif";
	img[6] = new Image(); img[6].src = "../common/img/bt_head_en_off.gif";
	img[7] = new Image(); img[7].src = "../common/img/bt_head_en_on.gif";
	img[8] = new Image(); img[8].src = "../common/img/bt_pagetop_off.gif";
	img[9] = new Image(); img[9].src = "../common/img/bt_pagetop_on.gif";
	img[10] = new Image(); img[10].src = "../common/img/bt_head_05_off.gif";
	img[11] = new Image(); img[11].src = "../common/img/bt_head_05_on.gif";


}



/* products swap image set */
if(navigator.appVersion.charAt(0) >= "3"){
var proimg = new Array();
//products swap image set
	proimg[0] = new Image(); proimg[0].src = "../common/img/bt_pronavi_01_off.gif";
	proimg[1] = new Image(); proimg[1].src = "../common/img/bt_pronavi_01_on.gif";
	proimg[2] = new Image(); proimg[2].src = "../common/img/bt_pronavi_02_off.gif";
	proimg[3] = new Image(); proimg[3].src = "../common/img/bt_pronavi_02_on.gif";
	proimg[4] = new Image(); proimg[4].src = "../common/img/bt_pronavi_03_off.gif";
	proimg[5] = new Image(); proimg[5].src = "../common/img/bt_pronavi_03_on.gif";
	proimg[6] = new Image(); proimg[6].src = "../common/img/bt_pronavi_04_off.gif";
	proimg[7] = new Image(); proimg[7].src = "../common/img/bt_pronavi_04_on.gif";
	proimg[8] = new Image(); proimg[8].src = "../common/img/bt_pronavi_05_off.gif";
	proimg[9] = new Image(); proimg[9].src = "../common/img/bt_pronavi_05_on.gif";
	proimg[10] = new Image(); proimg[10].src = "../common/img/bt_pronavi_06_off.gif";
	proimg[11] = new Image(); proimg[11].src = "../common/img/bt_pronavi_06_on.gif";
	proimg[12] = new Image(); proimg[12].src = "../common/img/bt_pronavi_07_off.gif";
	proimg[13] = new Image(); proimg[13].src = "../common/img/bt_pronavi_07_on.gif";
	proimg[14] = new Image(); proimg[14].src = "../common/img/bt_pronavi_08_off.gif";
	proimg[15] = new Image(); proimg[15].src = "../common/img/bt_pronavi_08_on.gif";
	proimg[16] = new Image(); proimg[16].src = "../common/img/bt_pronavi_09_off.gif";
	proimg[17] = new Image(); proimg[17].src = "../common/img/bt_pronavi_09_on.gif";
	proimg[18] = new Image(); proimg[18].src = "../common/img/bt_commerce_off.jpg";
	proimg[19] = new Image(); proimg[19].src = "../common/img/bt_commerce_on.jpg";
	proimg[20] = new Image(); proimg[20].src = "../common/img/bt_pronavi_10_off.gif";
	proimg[21] = new Image(); proimg[21].src = "../common/img/bt_pronavi_10_on.gif";
	proimg[22] = new Image(); proimg[22].src = "../common/img/bt_pronavi_11_off.gif";
	proimg[23] = new Image(); proimg[23].src = "../common/img/bt_pronavi_11_on.gif";
	proimg[24] = new Image(); proimg[24].src = "../common/img/bt_pronavi_12_off.gif";
	proimg[25] = new Image(); proimg[25].src = "../common/img/bt_pronavi_12_on.gif";
}