selenium webdriver move slider on left side

I want to move slider on left side of slider-bar. However, selenium webdriver moves it to right side but it does not move to left side. I want to move slider to 25% of total width of slider-bar. I am using below given code with java 1.8 with selenium 2.44. I have tried all the option using up,down,left,right arrow key but still not able to achieve it.

I would appreciate your inputs.

package RandD;

import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Action;
import org.openqa.selenium.interactions.Actions;

public class test{
static WebDriver driver;
public static void main(String[] args)

{
    driver = new FirefoxDriver();
    driver.get("http://jqueryui.com/slider/");
    driver.switchTo().frame(0);
    slider();
}

public static void slider(){
    WebElement slider = driver.findElement(By.id("slider"));
    int width=slider.getSize().getWidth();
    Actions move = new Actions(driver);
    org.openqa.selenium.interactions.Action action  = move.dragAndDropBy(slider, ((width*25)/100), 0).build();
    action.perform();
    System.out.println("Slider moved");
}
}

Answer

Well, I was not able to move the slider using all the possible option using dragAndDropBy and clickAndHold. However, using below snippet I was able to move slider to exact location of slid-bar. I am still wondering what was wrong in above code which does not move the slider to exact location as I was expecting.

you can set choose value of X is any its depends of width of your slider and if you use for loop to drag pointer on multiple position

public static void slider(){
  x=10;
    WebElement slider = driver.findElement(By.id("slider"));
    int width=slider.getSize().getWidth();
    Actions move = new Actions(driver);
    move.moveToElement(slider, ((width*x)/100), 0).click();
    move.build().perform();
    System.out.println("Slider moved");
}