// JavaScript Document
function elige_estilo(){
	if(navigator.userAgent.indexOf('Win') != -1){
		document.write("<LINK REL='STYLESHEET' TYPE='text/css' HREF='./estilos_spica_pc.css'>");
	}
	else if(navigator.userAgent.indexOf('Mac') != -1){
		if (navigator.appName=='Microsoft Internet Explorer'){
			document.write("<LINK REL='STYLESHEET' TYPE='text/css' HREF='./estilos_spica_mac.css'>");
		}else{
			document.write("<LINK REL='STYLESHEET' TYPE='text/css' HREF='./estilos_spica_mac_safari.css'>");
		}
	}
}