function createElm(){
	var nowBack=window.location.href;
	var nowFile=nowBack.split("+");//000.html
	var numStr=nowFile[1].split(".");
	var numStrThis=numStr[0];//000
	var num=parseInt(numStrThis,10);//0
	var numStrToString=num.toString();//文字数
	var numStrLength=numStrToString.length;
	
	var thisBack;
	var next;
	
	
	var headId=document.getElementById("header_other");
	var innerOl=headId.getElementsByTagName("ol");
	
	var olTag=document.createElement("ol");
	
	var liTag1=document.createElement("li");	
	var txt1=document.createTextNode("　　　");
	liTag1.appendChild(txt1);
	
	var liTag2=document.createElement("li");
	var aTag2=document.createElement("a");
	var txt2=document.createTextNode("<<前号へ");
	aTag2.appendChild(txt2);
	
	
	aTag2.onmouseover=function() {
		this.className="thisHover";
		this.style.cursor="pointer";
	}
	aTag2.onmouseout=function() {
		this.className="none";
	}
	aTag2.onclick=function() {
		switch(numStrLength) {
		case 1:
		var now=num-1;
		var nowStr=now.toString();
		thisBack="+00"+nowStr;
		break;
		
		case 2:
		var now=num-1;
		var nowStr=now.toString();
		thisBack="+0"+nowStr;
		if(num==10) {
			thisBack="+00"+nowStr;
		}
		break;
		
		default:
		var now=num-1;
		var nowStr=now.toString();
		thisBack="+"+nowStr;
		if(num==100) {
			thisBack="+0"+nowStr;
		}
	}
		this.href=thisBack+".html"
		if(thisBack=="+000") {
			this.href="backnumber.html"
		}
	}
	liTag2.appendChild(aTag2);
	
	var liTag3=document.createElement("li");	
	var txt3=document.createTextNode("　　　");
	liTag3.appendChild(txt3);
	
	var liTag4=document.createElement("li");
	var aTag4=document.createElement("a");
	var txt4=document.createTextNode("次号へ>>");
	aTag4.appendChild(txt4);
	
	aTag4.onmouseover=function() {
		this.className="thisHover";
		this.style.cursor="pointer";
	}
	aTag4.onmouseout=function() {
		this.className="none";
	}
	aTag4.onclick=function() {
		switch(numStrLength) {
		case 1:
		var now=num+1;
		var nowStr=now.toString();
		next="+00"+nowStr;
		if(num==9) {
			next="+0"+nowStr;
		}
		break;
		
		case 2:
		var now=num+1;
		var nowStr=now.toString();
		next="+0"+nowStr;
		if(num==99) {
			next="+"+nowStr;
		}
		break;
		
		default:
		var now=num+1;
		var nowStr=now.toString();
		next="+"+nowStr;
	}
	this.href=next+".html";
	if(next=="+082") { //←この数字を打ちかえる
			this.href="index.html"
		}
	}
	liTag4.appendChild(aTag4);
	
	for(var i=0;i<innerOl.length;i++){
		innerOl[i].appendChild(liTag1);
		innerOl[i].appendChild(liTag2);
		innerOl[i].appendChild(liTag3);
		innerOl[i].appendChild(liTag4);
	}
	
}

function pageHighlight() {
	var headId=document.getElementById("header_other");
	var aTag=headId.getElementsByTagName("a");
	for(var i=0;i<aTag.length;i++){
		var backNum="backnumber.html";
		var linkUrl=aTag[i].getAttribute("href");
		if(backNum.indexOf(linkUrl)!=-1){
			aTag[i].className="thisPage";
			aTag[i].onmouseover=function() {
			this.className="thisHover";
			}
			aTag[i].onmouseout=function() {
				this.className="thisPage";
			}
		} else {
			aTag[i].onmouseover=function() {
				this.className="thisHover";
			}
			aTag[i].onmouseout=function() {
				this.className="null";
			}
		}
		
	}
}




addLoadEvent(pageHighlight);
addLoadEvent(createElm);