gistfile1.txt

    public static void main(String[] args) throws Exception {
      WebDriver driver = new FirefoxDriver();

      driver.get("http://jasny.github.io/bootstrap/javascript.html#fileupload");
      JavascriptExecutor jse = (JavascriptExecutor) driver;
      WebElement navbar = driver.findElement(By.cssSelector(".navbar "));
      jse.executeScript("arguments[0].style.display='none'", navbar);
      WebElement fileinput=driver.findElement(By.cssSelector("#fileupload .bs-docs-example input[type='file']"));
      jse.executeScript("arguments[0].style.opacity=1", fileinput);
      jse.executeScript("arguments[0].style['transform']='translate(0px, 0px) scale(1)'", fileinput);
      System.out.println("fileinput.isDisplayedAgain();  " + fileinput.isDisplayed());
      fileinput.click();
      fileinput.sendKeys("C:\\temp\\test.py");
      //driver.quit();
   }