var var_useragent = navigator.userAgent.toLowerCase();
	glb_version = parseInt(navigator.appVersion);
	if(var_useragent.indexOf("win") > -1)
	{
		glb_platform = "win";
	}
	else if(var_useragent.indexOf("mac") > -1)
	{
		//alert("mac")
		glb_platform = "mac";
	}
	else if(var_useragent.indexOf("linux") > -1)
	{
		glb_platform = "linux";
	}
	else
	{
		glb_platform = "other";
	}
if(document.layers && glb_platform == "win")
{
	document.write('<link rel="stylesheet" type="text/css" href="commun/css/style_default_ns.css">');
}
else if(glb_platform == "win")
{
	document.write('<link rel="stylesheet" type="text/css" href="commun/css/style_default_ie.css">');
}
else if (glb_platform == "mac")
{
	document.write('<link rel="stylesheet" type="text/css" href="commun/css/style_default_ie_mac.css">');
}