var origWidth, origHeight;
if (document.layers) {
origWidth = window.innerWidth; origHeight = window.innerHeight;
window.onresize = function() { if (window.innerWidth != origWidth || window.innerHeight != origHeight) history.go(0); }
}

var cur_link, cur_linkf, cur_links, lnkflg;
function doLinkClass(lnk) {

if ( lnkflg >= 4 ) cur_link = cur_links;
else cur_link = cur_linkf;

if (lnk && lnk.blur) lnk.blur();
if (!lnk || cur_link == lnk) return;
if (cur_link) cur_link.className = "off";
lnk.className = "on";

if ( lnkflg >= 4 ) cur_links = lnk;
else cur_linkf = lnk;

//cur_link = lnk;
}

var cur_lyr, cur_lyrf, cur_lyrs;
function swapLayers(lnk,id) {
lnkflg = id.substr(3,1);
doLinkClass(lnk);
if ( id.substr(3,1) >= 4 ) cur_lyr = cur_lyrs;
else cur_lyr = cur_lyrf;
if (cur_lyr) hideLayer(cur_lyr);

showLayer(id);
//cur_lyr = id;

if ( id.substr(3,1) >= 4 ) cur_lyrs = id;
else cur_lyrf = id;
}

function showLayer(id) {
var lyr = getElemRefs(id);
if (lyr && lyr.css) lyr.css.display = "block";
}

function hideLayer(id) {
var lyr = getElemRefs(id);
if (lyr && lyr.css) lyr.css.display = "none";
}

function getElemRefs(id) {
var el = (document.getElementById)? document.getElementById(id): (document.all)? document.all[id]: (document.layers)? getLyrRef(id,document): null;
if (el) el.css = (el.style)? el.style: el;
return el;
}

function getLyrRef(lyr,doc) {
if (document.layers) {
var theLyr;
for (var i=0; i<doc.layers.length; i++) {
theLyr = doc.layers[i];
if (theLyr.name == lyr) return theLyr;
else if (theLyr.document.layers.length > 0) 
if ((theLyr = getLyrRef(lyr,theLyr.document)) != null)
return theLyr;
}
return null;
}
}

function init(id,lyr) {
lnkflg = id.substr(3,1);
var lnk = getElemRefs(id);
swapLayers(lnk,lyr);
}

init('lnk0','lyr0');


function WinOpen()
{
  window.open("/service/ftth/popup_west.html","subwin",
                         "width=700,height=429,toolbar=no,location=no,status=no,menubar=no,scrollbars=yes");
}