function ir(a){
	if (a=='cat'){
		window.location.replace('../cat/empresa.htm');
	}
	if (a=='cas'){
		window.location.replace('../cas/empresa.htm');
	}
	if (a=='eng'){
		window.location.replace('../eng/empresa.htm');
	}
	if (a=='fra'){
		window.location.replace('../fra/empresa.htm');
	}
}