winTest = navigator.platform.indexOf("Win");
if(winTest > -1) {
	//alert('gp pc')
	document.writeln('<link href="struct/style/pc.css" rel="stylesheet" type="text/css">');
}else{
	//alert('gp Mac');
	document.writeln('<link href="struct/style/mac.css" rel="stylesheet" type="text/css">');
}