title: How to remove the thumb of UISlider in iphone?
body: <p>I have two UISliders in the same view.My requirement is,when user change the value of 1st slider,the 2nd slider value should be change according to it.So,in 2nd slider I want to invisible its thumb.Although I have clear the color of its thumb,It is visible to the user.How can I solve it ?</p>