//window.onLoad=PreloadImages('img/-----.jpg','img/-----.jpg');

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];
		}
	}
}

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 FindObj(n, d){ //v4.01
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);
	if(!x && d.getElementById) x=d.getElementById(n);
	return x;
}

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 winopen(url,windowname,width,height) { //ポップアップウィンドウ表示（中心表示）
var features="location=no, menubar=no, status=no, scrollbars=yes, resizable=yes, toolbar=no";
 if (width) {
  if (window.screen.width > width)
   features+=", left="+(window.screen.width-width)/2;
  else width=window.screen.width;
  features+=", width="+width;
 }
 if (height) {
  if (window.screen.height > height)
   features+=", top="+(window.screen.height-height)/2;
  else height=window.screen.height;
  features+=", height="+height;
 }
 window.open(url,windowname,features);
}


function winopen_old(winurl){ //（旧）ポップアップウィンドウ表示
var wo;
	if(navigator.appName.charAt(0)=="M"){
		wo=window.open(winurl,"popupwin","width=655,height=265,scrollbars=yes,resizable=yes");
	}else{
		wo=window.open(winurl,"popupwin","width=640,height=260,scrollbars=yes,resizable=yes");
	}
	wo.focus();
}

function NoJump(){ //空スクリプト
}

function ShowBlock(blockno){ //表示
var blockno;
	if(navigator.appName.charAt(0)=="M"){
		if(navigator.appVersion.indexOf("MSIE 5") != -1 || navigator.appVersion.indexOf("MSIE 6") != -1){
			if(document.getElementById){
				document.getElementById(blockno).style.display="block";
			}
		}else{
			if(document.all){
				document.all(blockno).style.display="block";
			}
		}
	}
	if(navigator.appName.charAt(0)=="N"){
		if(document.getElementById){
			document.getElementById(blockno).style.display="block";
		}
		if(document.layers){
			document.layers[blockno].display="block";
		}
	}
}

function HideBlocks(blockno){ //非表示
var blockno;
	if(navigator.appName.charAt(0)=="M"){
		if(navigator.appVersion.indexOf("MSIE 5") != -1 || navigator.appVersion.indexOf("MSIE 6") != -1){
			if(document.getElementById){
				document.getElementById(blockno).style.display="none";
			}
		}else{
			if(document.all){
				document.all(blockno).style.display="none";
			}
		}
	}
	if(navigator.appName.charAt(0)=="N"){
		if(document.getElementById){
			document.getElementById(blockno).style.display="none";
		}
		if(document.layers){
			document.layers[blockno].display="none";
		}
	}
}

function ImgChange(targetimg, changeimg){ //画像切り替え
var targetimg;
var changeimg;
	//画像切り替えdocument.targetimg.src=changeimg;
	
	if(navigator.appName.charAt(0)=="M"){
		if(navigator.appVersion.indexOf("MSIE 5") != -1 || navigator.appVersion.indexOf("MSIE 6") != -1){
			if(document.getElementById){
				document.getElementById(targetimg).src=changeimg;
			}
		}else{
			if(document.all){
				document.all(targetimg).src=changeimg;
			}
		}
	}
	if(navigator.appName.charAt(0)=="N"){
		if(document.getElementById){
			document.getElementById(targetimg).src=changeimg;
		}
		if(document.layers){
			document.layers[targetimg].src=changeimg;
		}
	}

}


//styleswitcher========================================================

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);


//smoothscroll========================================================

var ss = {
  fixAllLinks: function() {
    // Get a list of all links in the page
    var allLinks = document.getElementsByTagName('a');
    // Walk through the list
    for (var i=0;i<allLinks.length;i++) {
      var lnk = allLinks[i];
      if ((lnk.href && lnk.href.indexOf('#') != -1) && 
          ( (lnk.pathname == location.pathname) ||
	    ('/'+lnk.pathname == location.pathname) ) && 
          (lnk.search == location.search)) {
        // If the link is internal to the page (begins in #)
        // then attach the smoothScroll function as an onclick
        // event handler
        ss.addEvent(lnk,'click',ss.smoothScroll);
      }
    }
  },

  smoothScroll: function(e) {
    // This is an event handler; get the clicked on element,
    // in a cross-browser fashion
    if (window.event) {
      target = window.event.srcElement;
    } else if (e) {
      target = e.target;
    } else return;

    // Make sure that the target is an element, not a text node
    // within an element
    if (target.nodeName.toLowerCase() != 'a') {
      target = target.parentNode;
    }
  
    // Paranoia; check this is an A tag
    if (target.nodeName.toLowerCase() != 'a') return;
  
    // Find the <a name> tag corresponding to this href
    // First strip off the hash (first character)
    anchor = target.hash.substr(1);
    // Now loop all A tags until we find one with that name
    var allLinks = document.getElementsByTagName('a');
    var destinationLink = null;
    for (var i=0;i<allLinks.length;i++) {
      var lnk = allLinks[i];
      if (lnk.name && (lnk.name == anchor)) {
        destinationLink = lnk;
        break;
      }
    }
    if (!destinationLink) destinationLink = document.getElementById(anchor);

    // If we didn't find a destination, give up and let the browser do
    // its thing
    if (!destinationLink) return true;
  
    // Find the destination's position
    var destx = destinationLink.offsetLeft; 
    var desty = destinationLink.offsetTop;
    var thisNode = destinationLink;
    while (thisNode.offsetParent && 
          (thisNode.offsetParent != document.body)) {
      thisNode = thisNode.offsetParent;
      destx += thisNode.offsetLeft;
      desty += thisNode.offsetTop;
    }
  
    // Stop any current scrolling
    clearInterval(ss.INTERVAL);
  
    cypos = ss.getCurrentYPos();
  
    ss_stepsize = parseInt((desty-cypos)/ss.STEPS);
    ss.INTERVAL =	setInterval('ss.scrollWindow('+ss_stepsize+','+desty+',"'+anchor+'")',10);
  
    // And stop the actual click happening
    if (window.event) {
      window.event.cancelBubble = true;
      window.event.returnValue = false;
    }
    if (e && e.preventDefault && e.stopPropagation) {
      e.preventDefault();
      e.stopPropagation();
    }
  },

  scrollWindow: function(scramount,dest,anchor) {
    wascypos = ss.getCurrentYPos();
    isAbove = (wascypos < dest);
    window.scrollTo(0,wascypos + scramount);
    iscypos = ss.getCurrentYPos();
    isAboveNow = (iscypos < dest);
    if ((isAbove != isAboveNow) || (wascypos == iscypos)) {
      // if we've just scrolled past the destination, or
      // we haven't moved from the last scroll (i.e., we're at the
      // bottom of the page) then scroll exactly to the link
      window.scrollTo(0,dest);
      // cancel the repeating timer
      clearInterval(ss.INTERVAL);
      // and jump to the link directly so the URL's right
      location.hash = anchor;
    }
  },

  getCurrentYPos: function() {
    if (document.body && document.body.scrollTop)
      return document.body.scrollTop;
    if (document.documentElement && document.documentElement.scrollTop)
      return document.documentElement.scrollTop;
    if (window.pageYOffset)
      return window.pageYOffset;
    return 0;
  },

  addEvent: function(elm, evType, fn, useCapture) {
    // addEvent and removeEvent
    // cross-browser event handling for IE5+,  NS6 and Mozilla
    // By Scott Andrew
    if (elm.addEventListener){
      elm.addEventListener(evType, fn, useCapture);
      return true;
    } else if (elm.attachEvent){
      var r = elm.attachEvent("on"+evType, fn);
      return r;
    } else {
      alert("Handler could not be removed");
    }
  } 
}

ss.STEPS = 30;

ss.addEvent(window,"load",ss.fixAllLinks);