Atualmente trabalhando em webdriver de selênio e usando a linguagem Java.

Log.info("Clicking on To weekrange dropdown");
JavascriptExecutor executor25 = (JavascriptExecutor)driver;
executor25.executeScript("document.getElementById('toWeekYear).style.display='block';");
Select select25 = new Select(driver.findElement(By.id("toWeekYear")));
select25.selectByVisibleText("2011");
JavascriptExecutor executor26 = (JavascriptExecutor)driver;
executor26.executeScript("document.getElementById('toWeekYear).style.display='block';");
Select select26 = new Select(driver.findElement(By.id(" toWeek")));
select26.selectByVisibleText(" W 5");
Thread.sleep(6000);

No código acima, estou tentando selecionar o intervalo de semana e está no formulário para selecionar ano-2011 e semana-W 5. Esses valores estão selecionando na lista suspensa. O problema é ao selecionar primeiro dropdown é selecionar o ano e ao tentar selecionar o segundo drop down estou recebendo o erro Não é possível localizar o elemento com o texto: W 1

Aqui está a tag HTML:

<select id="fromWeekYear" style="width:60px" name="fromWeekYear">
<option value="2010"> 2010</option>
<option value="2011"> 2011</option>
<option value="2012"> 2012</option>
<option selected="" value="2013"> 2013</option>
</select>
<select id="fromWeek" style="width:60px" name="fromWeek">
<option value="1"> W 1</option>
<option value="2"> W 2</option>
<option value="3"> W 3</option>
<option value="4"> W 4</option>
<option value="5"> W 5</option>

e

<select id="toWeekYear" style="width:60px" name="toWeekYear">
<option value="2010"> 2010</option>
<option value="2011"> 2011</option>
<option value="2012"> 2012</option>
<option selected="" value="2013"> 2013</option>
</select>
<select id="toWeek" style="width:60px" name="toWeek">
<option value="1"> W 1</option>
<option value="2"> W 2</option>
<option value="3"> W 3</option>
<option value="4"> W 4</option>
<option value="5"> W 5</option>

Aqui está o meu fromweek javascript:

Log.info("Clicking on From weekrange dropdown");
JavascriptExecutor executor23 = (JavascriptExecutor)driver;
     executor23.executeScript("document.getElementById('fromWeekYear').style.display='block';");

Select select23 = new Select(driver.findElement(By.id("fromWeekYear")));
select23.selectByVisibleText("2011");
JavascriptExecutor executor24 = (JavascriptExecutor)driver;
Thread.sleep(6000);
executor24.executeScript("document.getElementById('fromWeek').style.display='block';");
Select select24 = new Select(driver.findElement(By.id("fromWeek")));
select24.selectByVisibleText(" W 1");
Thread.sleep(6000);