(function () {
	var arr = [
		'home',
		'scene',
		'feature',
		'basic',
		'plan',
		'guide',
		'support'
	];
	
	var len        = arr.length
	var URL        = location.href;
	var a          = URL.split('/');
	var dir        = a[4];
	var currentNum;
	var list       = $('tab-nav');
	var elm        = list.getElementsByTagName('li');
	
	if(a.length <= 5){
		currentNum   = 0;
	}else{
		for (var i=0; i<len; i++){
			if (dir == arr[i]){
				currentNum = i;
			}
		}
	}
	
	if(currentNum != undefined){
		var target  = elm[currentNum].getElementsByTagName('img')[0];
		changeImg(target, true, '-focus')
	}
	
})();