// JavaScript Document
if(navigator.appName=="Microsoft Internet Explorer"){
	if(navigator.appVersion.indexOf("MSIE")!= -1){
		var temp = navigator.appVersion.split("MSIE");
		var versao = parseFloat(temp[1]);
		if(versao==6){
			document.write("<link rel='stylesheet' href='css/principal_ie6.css' />");
		}else{
			document.write("<link rel='stylesheet' href='css/principal.css' />");
		}
	}
}else{
	document.write("<link rel='stylesheet' href='css/principal.css' />");
}