var browser;
	if((navigator.appName=="Microsoft Internet Explorer")&&(parseInt(navigator.appVersion)>=4))
		browser='ie4+';
	else if (document.getElementById && (navigator.appName.indexOf("Netscape") != -1) )
		browser='ns6'

	if (browser=='ie4+'||browser=='ns6')
		document.write('<LINK rel="stylesheet" type="text/css" href="/MC/comunes/css/estilos_ie.css">');
	else
		document.write('<LINK rel="stylesheet" type="text/css" href="/MC/comunes/css/estilos_nn.css">');