Here is a http://jsfiddle.net/6NTSV/ which seems to do what I want, but I'm not sure how to get the X position of the slider, then apply that to the opacity of image1, image2, image3, image4.The slider is \[code\]960px wide\[/code\], so \[code\]960 / 4 = 240\[/code\], for each \[code\]240 pixels\[/code\] along the slider the opacity needs to be set from 0-100%.Firstly, is this possible in jquery? Secondly, can anyone help with the code or show me some links which may help?