// JavaScript Document
function troca(caminho,desc){
	document.getElementById("foto").style.display="none";
	document.getElementById("legenda").style.display="none";
	document.getElementById("carregando").style.display="block";
	document.getElementById("foto").src=""+caminho+"";
	document.getElementById("foto").alt=""+desc+"";
	document.getElementById("legenda").innerHTML=""+desc+"";
}

function mostra(){
	var tamanho;
	document.getElementById("foto").style.display="block";
	document.getElementById("legenda").style.display="block";
	document.getElementById("carregando").style.display="none"; //none
	
	tamanho= Math.round((document.getElementById("foto").fileSize)/1024);

	if (nav == "IE"){
		document.getElementById("carregando").innerHTML= "carregando...<br />"+tamanho+" kb";
	}
	else{
		document.getElementById("carregando").innerHTML= "carregando...<br /> aguarde uns instantes por favor";
	}
}

var nav;

if(navigator.appName == 'Netscape'){
	// FF
	nav="FF";
}
else if(navigator.appName == 'Microsoft Internet Explorer'){
	if(navigator.userAgent.indexOf("Opera") == -1){
		//IE
		nav="IE"
	}
	else{
		//OP
		nav="OP"
	}
}