Graph behaving wierd when the slider is moved

Hi,

Good plugin. But is behaving wierd in the below link

http://vencharsonline.in/glue/?page_id=2

Please try moving the slider behind the graph and see what is happening. Also wanted to know whether it is possible to replace the slider with some text so that user clicks on the text and graph changes?

https://wordpress.org/plugins/data-visualizer/