function ofce(string){

ExpText = document.getElementById(string).style;
if(ExpText.display == 'none') ExpText.display = "block";
else ExpText.display = "none";
}

function onde(string){

ExpText = document.getElementById(string).style;
if(ExpText.display == 'none') ExpText.display = "block";
else ExpText.display = "none";
}