window.onload = function() {
	
	var path="";
	var f=dirSearch();
	
	if(f){
		path="../";
	}
	
	//HTML書き出し
	var str='';
	str+='<ul>';
	str+='<li id="m_concept"><a href="'+path+'index.html">Concept</a></li>';
	str+='<li id="m_video"><a href="'+path+'video.html">Video</a></li>';
	str+='</ul>';
	document.getElementById("NAV_AREA").innerHTML=str;
}

function dirSearch(){
	//false = eng　　true = jp
	var flag=false;
	var locationStr=location.href;
	var locationAry=locationStr.split("/");
	var aLength=locationAry.length;
	for (var i=0;i<aLength;i++){
		if(locationAry[i]=="video"){
			flag=true;
		}
	}
	return flag;
}