Selecting Multiple Items in Listbox

1. String strURL;  
2. strURL="URL";  
3.   
4. WebDriver firefoxDriver=new FirefoxDriver();    
5. firefoxDriver.get(strURL);  
6.   
7. WebElement list1;    
8. list1=firefoxDriver.findElement(By.name("lst"));    
9.   
10. List<WebElement> lstOptions=list1.findElements(By.tagName("option"));    
11. list1.sendKeys(Keys.CONTROL);    
12. lstOptions.get(0).click();//Selects the first option.    
13. lstOptions.get(1).click();//Selects the second option.