var Mac = navigator.appVersion.indexOf('Mac',0) != -1; // Mac
var Win = navigator.appVersion.indexOf('Win',0) != -1; // Win
var IE  = navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1; //IE
var NS  = navigator.appName.indexOf("Netscape",0) != -1; // Netscape
var Safari = navigator.userAgent.indexOf("AppleWebKit") != -1; // MacOS X Safari
var Opera6 = navigator.userAgent.indexOf("Opera/6.0") != -1; // Opera 6
var MacNS4 = navigator.userAgent.indexOf("Mozilla/4") != -1; // MacNS4.x
var MacNS6 = navigator.userAgent.indexOf("Netscape6/6.0") != -1; // MacNetscape 6.0
var MacIE4 = navigator.userAgent.indexOf("MSIE 4") != -1; // MacIE4.x
var Moz = navigator.userAgent.indexOf("Gecko") != -1; // Mozilla, Netscape 6.x, 7.x

//��΃p�X
var cssDir = "http://www.ok-kasei.jp/shared/css/";

var ver = (navigator.appVersion.charAt(0))
	if (Mac && Safari){
		document.write('<link rel="stylesheet" href="'+cssDir +'style_msf.css" type="text/css">'); //for MacOS X Safari
	}
	else if (Mac && Opera6){
		document.write('<link rel="stylesheet" href="'+cssDir +'style_mop6.css" type="text/css">'); //for MacOS X Opera 6.0
	}
	else if (Mac && IE){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_mie.css" type="text/css">'); //for Mac IE5.x
	}
	else if (Mac && IE && MacIE4){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_mie.css" type="text/css">'); //for MacIE4.x
	}
	else if (Mac && NS && MacNS6){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_mns7.css" type="text/css">'); //for MacNS6.0
	}
	else if (Mac && Moz){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_mns7.css" type="text/css">'); //for MacNS6.1, NS7.0
	}
	else if (Mac && NS && MacNS4){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_mns4.css" type="text/css">'); //for Mac NS4.x
	}
	else if (Moz){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_wns7.css" type="text/css">'); //for WinNS6.x, 7.x
	}
	else if (document.layers){
		document.write('<link rel="stylesheet" href="'+cssDir+'style_wns4.css" type="text/css">'); //for Win NS4.x
	}
	else {
		document.write('<link rel="stylesheet" href="'+cssDir+'style_wie.css" type="text/css">'); //for other
	}