function spcss(){
if ((navigator.userAgent.indexOf('iPhone') > 0 && navigator.userAgent.indexOf('iPad') == -1) || navigator.userAgent.indexOf('iPod') > 0 || navigator.userAgent.indexOf('Android') > 0) {
	 document.write("<link rel='stylesheet' type='text/css' href='css/style_sp.css'>");
}
}

spcss();