<!--
// ref_url not found to referrer set
// ref_url fond to noting do

	var url = get_cookie('ref_url');
	if (url == "") {
		url = document.referrer;
		// 2009/04/07’Ç‰Á
		if (url.indexOf("http") != -1) {
			var ref_url = "";
			var ary = url.split("/");
			for (i=0; i<ary.length; i++) {
				if (i>2) {
					break;
				}
				ref_url = ref_url + ary[i]+"/";
			}
			url = ref_url;
		}

		set_cookie('ref_url', url);
	}

// get cookie data
	function get_cookie(cname){

		var idx1;
		var idx2;
		var idx3;
		var temp_data;
		var cookie_data = document.cookie + "; ";

		for (idx1 = 0; idx1 < cookie_data.length; idx1++) {
			idx2 = cookie_data.indexOf(";", idx1);
			temp_data = cookie_data.substring(idx1, idx2);
			idx3 = temp_data.indexOf("=", 0);
			if (temp_data.substring(0, idx3) == cname) {
				return unescape(temp_data.substring(idx3 + 1, idx2));
			}
		}
		return ("");
	}

// set cookie data
	function set_cookie(cname, cvalue){
		var set_data = cvalue.substring(0, 80);
		var cookie_data = cname + "=" + escape(cvalue) + ";" + "PATH=/;";
		document.cookie = cookie_data;
	}
//-->