os= navigator.platform;
mac= "MacPPC";

if (os == mac){
	document.write('<link rel="stylesheet" type="text/css" href="/styles/mac.css" />');
}
else {
	document.write('<link rel="stylesheet" type="text/css" href="/styles/win.css" />');
}

var dg=!!document.getElementById;
var id;
var list;
function stChange(id,list){
	if(dg){
	document.getElementById(id).className=list;
	} else { }
}
var NvImg=new Array();
for(i=1;i<=12;i++){
NvImg[i]=new Image(); NvImg[i].src="/images/navi_"+i+".gif";
}
function Change(nam,num){
document.images[nam].src=NvImg[num].src;
}

var BtImg=new Array(2); {
BtImg[0]=new Image(); BtImg[0].src="/images/mail01.gif";
BtImg[1]=new Image(); BtImg[1].src="/images/mail02.gif";
}
function ChangeBt(nam,num){
document.images[nam].src=BtImg[num].src;
}