function MM_preloadImages() {
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function MM_swapImgRestore() {
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_findObj(n, d) {
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_swapImage() {
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}

function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];		
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}	
	}
	return (arrReturnElements)
}

function addClassName(oElm, strClassName){
	var strCurrentClass = oElm.className;
	if(!new RegExp(strClassName, "i").test(strCurrentClass)){
		oElm.className = strCurrentClass + ((strCurrentClass.length > 0)? " " : "") + strClassName;
	}
}

function removeClassName(oElm, strClassName){
	var oClassToRemove = new RegExp((strClassName + "\s?"), "i");
	oElm.className = oElm.className.replace(oClassToRemove, "").replace(/^\s?|\s?$/g, "");
}

function prepareBoxes() {
	var boxes = getElementsByClassName(document, "li", "linkbox");
	for (var i=0; i<boxes.length; i++){
		var fullstories = getElementsByClassName(document, "p", "fullstory");
		for (var k=0; k<fullstories.length; k++){
			fullstories[k].parentNode.tabIndex = k+1;
			fullstories[k].style.display = "none";
			fullstories[k].parentNode.onmouseover = function() {
				addClassName(this, "hovering");
			}
			fullstories[k].parentNode.onmouseout = function() {
				removeClassName(this, "hovering");
			}
			fullstories[k].parentNode.onclick = function() {
				var destin = this.getElementsByTagName("a");
				window.location = destin[0].href;
			}
			fullstories[k].parentNode.onkeypress = fullstories[k].parentNode.onclick;
		}
	}
}
window.onload=externalLinks;
addLoadEvent(prepareBoxes);

function externalLinks() {
  if (!document.getElementsByTagName) return;
    var anchors = document.getElementsByTagName("a");   
    for (var i=0; i<anchors.length; i++) {   
    var anchor = anchors[i];   
    if (anchor.getAttribute("href") &&   
      anchor.getAttribute("rel") == "external")   
      anchor.target = "_blank";   
    }
  }



function tree(menu_class,menu_id) {
	var div=document.getElementById(menu_id);

	if (div.style.display == "block") div.style.display="none";
	else {
		var sib=div.parentNode.childNodes;
		for (var i=0; i < sib.length; i++)
			if (sib[i].className == menu_class) sib[i].style.display="none";
			div.style.display="block";
	}
}
function title(menu_class,menu_id) {
	var div=document.getElementById(menu_id);
	if (div.style.display == "block") div.style.display="none";
	else {
		var sib=div.parentNode.childNodes;
		for (var i=0; i < sib.length; i++)
			if (sib[i].className == menu_class) sib[i].style.display="none";
			div.style.display="block";
	}
}


/* 画像のオン・オフを自動で制御 _on / _off */
function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}