// JScript File
function zoomConteudo(acao)
{
    var sizeOriginal = '12';
    var sizeAtual = document.getElementById('icdz').style.fontSize;
    var numAtual = sizeAtual.substr(0,2);
    
    if (sizeAtual == '')
        sizeAtual = sizeOriginal;
    else
        sizeAtual = numAtual;
          
    if (acao == '=')
    {
        document.getElementById('icdz').style.fontSize = sizeOriginal + 'px';        
    }
    
    if (acao == '-')
    {
        sn = 0;
        sn = parseInt(sizeAtual) - parseInt(2);
        
        if (sn >= 10)
        {
            document.getElementById('icdz').style.fontSize = sn + 'px';            
        }    
    }
    
    if (acao == '+')
    {
        sn = 0;
        sn = parseInt(sizeAtual) + parseInt(2);
                
        if (sn <= 18)
        {
            document.getElementById('icdz').style.fontSize = sn + 'px';            
        }     
    }
    return false;
}