//----------------------------------------//
//imageChange//
//----------------------------------------//
function findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
	d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=findObj(n,d.layers[i].document); return x;
}
function swapImage() { //v3.0
  var i,j=0,x,a=swapImage.arguments; document.sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function swapImgRestore() { //v3.0
  var i,x,a=document.sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function preloadImages() { //v3.0
 var d=document; if(d.images){ if(!d.p) d.p=new Array();
   var i,j=d.p.length,a=preloadImages.arguments; for(i=0; i<a.length; i++)
   if (a[i].indexOf("#")!=0){ d.p[j]=new Image; d.p[j++].src=a[i];}}
}


//----------------------------------------//
//fontChange//
//----------------------------------------//
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);



//----------------------------------------//
//pagetop//
//----------------------------------------//
var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
var Win = navigator.appVersion.indexOf('Win',0) != -1;
var IE  = navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1;
var NN  = navigator.appName.indexOf("Netscape",0) != -1;
var Moz = navigator.userAgent.indexOf("Gecko/",0) != -1;
var Opera = window.opera;
var Vmajor = parseInt(navigator.appVersion); // ex. 3
var Vminor = parseFloat(navigator.appVersion); // ex. 3.01

var MacIE4 = ((Mac && navigator.appVersion.indexOf('MSIE 4.',0) != -1));
var MacIE3 = ((Mac && navigator.appVersion.indexOf('MSIE 3.',0) != -1));


function scroll (target) {
  if (IE) var targetTop = target == 'body' ? 0 : document.getElementById('content').offsetTop + document.getElementById(target).offsetTop;
  else var targetTop = document.getElementById(target).offsetTop;
  var docElement = document.documentElement;
  var docBody = document.body;
  var inHeight = window.innerHeight;
  var cliHeight = docElement.clientHeight;
  var winHeight = typeof(inHeight) == 'number' ? inHeight : (docElement && cliHeight) ? cliHeight : (docBody && cliHeight) ? cliHeight : 0;
  var posFoot = document.getElementById('footer').offsetTop+40;
  if (winHeight > (posFoot-targetTop)) targetTop -= winHeight - (posFoot-targetTop);
  if (!MacIE3 && !MacIE4 && !NN && window.scrollTo || NN && (Vminor >= 4.75) && window.scrollTo) jumpTo(targetTop, 0, 7, 14);
  else location.hash = target;
}

function getScrollTop () {
  if (IE) return document.body.scrollTop;
  else if (NN) return window.pageYOffset;
  else return 0;
}

var Timer;
function jumpTo (dstY, srcY, frms, waitSec) {
  if (Timer) clearTimeout(Timer);
  if (!dstY || dstY < 0) dstY = 0;
  if (!srcY) srcY = 0 + getScrollTop();
  if (!frms) frms = 5;
  if (!waitSec) waitSec = 20;
  srcY += (dstY - getScrollTop()) / frms;
  if (srcY < 0) srcY = 0;
  posY = Math.floor(srcY);
  window.scrollTo(0, posY);
  if (posY != dstY) Timer = setTimeout("jumpTo("+ dstY +", "+ srcY +", "+ frms +", "+ waitSec +")", waitSec);
  else if (posY == dstY) clearTimeout(Timer);
  else if (posY < 1) window.scroll(0, 0);
}