if (document.images) {
var snav_01 = new Image()
snav_01.src = "../images/navi_local_ir_01_off.gif";
var snav_01_b = new Image()
snav_01_b.src = "../images/navi_local_ir_01_on.gif";

var snav_02 = new Image()
snav_02.src = "../images/navi_local_ir_02_off.gif";
var snav_02_b = new Image()
snav_02_b.src = "../images/navi_local_ir_02_on.gif";

var snav_03 = new Image()
snav_03.src = "../images/navi_local_ir_03_off.gif";
var snav_03_b = new Image()
snav_03_b.src = "../images/navi_local_ir_03_on.gif";

var snav_04 = new Image()
snav_04.src = "../images/navi_local_ir_04_off.gif";
var snav_04_b = new Image()
snav_04_b.src = "../images/navi_local_ir_04_on.gif";

var snav_05 = new Image()
snav_05.src = "../images/navi_local_ir_05_off.gif";
var snav_05_b = new Image()
snav_05_b.src = "../images/navi_local_ir_05_on.gif";

var snav_06 = new Image()
snav_06.src = "../images/navi_local_ir_06_off.gif";
var snav_06_b = new Image()
snav_06_b.src = "../images/navi_local_ir_06_on.gif";

var snav_07 = new Image()
snav_07.src = "../images/navi_local_ir_07_off.gif";
var snav_07_b = new Image()
snav_07_b.src = "../images/navi_local_ir_07_on.gif";
}

function act(imgName) {
	if (document.images)
	document[imgName].src = eval(imgName + '_b.src')
}

function inact(imgName) {
	if (document.images)
	document[imgName].src = eval(imgName + '.src')
}