I need a simple ajax component: a half round gauge which is controlled by a slider with an image-button for sending ajax request.
It could be a gouge from a [url removed, login to view] library (best case).
The initial value of the slider (and a gouge) should be set in a php skript.
By moving slider, the currently selected value should be displayed near the slider cap.
By clicking on an image-button an ajax request with the selected value of the slider should be sent to a php script.
I will provide a screenshot, how the slider and a gauge with an image button should be designed.