/**
 * @author cce
 */

var mode = 0;
var REF = document.referrer;


var keynum = checkKeyNum();
if(keynum !=0){
	mode = searchKey(keynum);
	if(mode < 0){
		mode = 0;
	}
}
//キーワードのカテゴリ分類数取得
function checkKeyNum() {
	var cnt =0;
	var temp = 0;
	try{
		for(var i=1;i<5;i++){
			temp = eval('key'+i)[0];
			cnt++;
		}
	}catch (e) {
		return cnt;
	}
}
//キーワードが含まれているか確認
function searchKey(knum){
	var limitar = 0;
	var checker = -1;
	for (var i=1;i<=knum;i++){
		limitar = eval('key'+i).length;
		for(var j=1;j<=limitar;j++){
			if(REF.indexOf(encodeURI(eval('key'+i)[j]))>=0){
				checker = i;
				break;
			}
		}
	}
	return checker;
}