//over WinIE4,MacIE3,NN3

var globalNaviImageList = new Array();
var globalNaviPreloadFlag = false;

function globalNaviPreLoad(){
	buttonImg = new Array();
	globalNaviPreloadFlag = false;
	
	for (var i=10; i<=13; i++) {
		buttonImg[i]  = new Image();
		buttonImg[i].src = "/WEB/COMMON/IMAGES/g_navi_btn_" + i + "_on.jpg";
	}
	
	globalNaviPreloadFlag = true;
}


function imageOn(n){
	if(globalNaviPreloadFlag) document.images['menu'+n].src = buttonImg[n].src;
}

function imageOff(n){
	if(globalNaviPreloadFlag) document.images['menu'+n].src = "/WEB/COMMON/IMAGES/g_navi_btn_" + n + "_off.jpg";
}