How to extends the ProgressBar to be custom_ProgressBar

I am trying to make a new progressbar of extends webix.ProgressBar.
How extends to no proto webix.ProgressBar when I add new file myProgressBar.
As you know, webix progress bar animation do well in HTML5, but It’s freezing in IE8 because it via CSS3.
Have any good idea or solve that issue?

Hi,

Both progress bars work in old IE. The only issue is that spinner icon rotation works only html5 browsers. You can use “green line” progress or customize .webix_progress_icon .webix_progress_state css rule and use .gif image instead of FontAwesome icon.