<!--var aaa;var c_o;var c_b;c_o = navigator.userAgent.toUpperCase();c_b = navigator.appName.toUpperCase();function check(){if (c_o.indexOf("MAC") >= 0){/*	alert("MAC");*/	if(c_b.indexOf("NETSCAPE") >= 0)	{/*		alert("NETSCAPE");*/		return "mac_nn";	}	else	{/*		alert("NETSCAPE以外");*/		return "mac_ie";	}}else{/*	alert("MAC以外");*/	if(c_b.indexOf("NETSCAPE") >= 0)	{/*		alert("NETSCAPE");*/		return "win_nn";	}	else	{/*		alert("NETSCAPE以外");*/		return "win_ie";	}}}//-->