function Tempo(speed, size, text) {
var tmpo;
var novo;
var horas;
var mins;
var sec_f;
var secs;
tmpo = size / (speed / 8);
tmpo = Math.round(tmpo);
horas = tmpo / 3600;
horas = Math.floor(horas);
if(horas < 10) {
 horas = '0' + horas;
}
if(horas >= 1) {
 novo = horas;
 sec_f = tmpo % 3600;
 if(sec_f > 60) {
mins= sec_f / 60;
mins = Math.floor(mins);
if(mins < 10) {
mins = '0' + mins;
}
novo = novo + ':' + mins;
secs= sec_f % 60;
if(secs < 10) {
secs = '0' + secs;
}
if(secs == '00') {
secs = '01';
}
novo = novo + ':' + secs;
 }
 else {
mins = 0;
if(mins < 10) {
mins = '0' + mins;
}
novo = novo + ':' + mins;
secs = sec_f;
if(secs < 10) {
secs = '0' + secs;
}
	 if(secs == '00') {
	 secs = '01';
	 }
novo = novo + ':' + secs;
 }
}
else {
 mins= tmpo / 60;
 mins = Math.floor(mins);
 if(mins < 10) {
mins = '0' + mins;
 }
 if(mins >= 1) {
novo = '00:' + mins;
secs = tmpo % 60;
if(secs < 10) {
secs = '0' + secs;
}
if(secs == '00') {
secs = '01';
}
novo = novo + ':' + secs;
 }
 else {
secs = tmpo % 60;
if(secs < 10) {
secs = '0' + secs;
}
if(secs == '00') {
secs = '01';
}
novo = '00:00:' + secs;
 }
}
	document.getElementById("tempo").innerHTML = novo + ' a ' + text;
	document.getElementById("tempodownsel").style.visibility = 'hidden';
}


function mostraop(qual) {
	document.getElementById(qual).style.visibility = 'visible';
}
	
function escondeop(qual) {
	document.getElementById(qual).style.visibility = 'hidden';
	}