Hello! Thanks for answer!<br>
The problem is I can't use jQuery and I'm sentenced to ie8 :(<br>
Furthermore, even If I add new action to arrows (rmLeftArrow and rmRightArrow classes) by arrow.onclick bar with elements (rmRootScrollGroup class) moves as it was. <br>
After creating additional function to other elements (other than embaded arows) to moving the bar it moves, but after clicking on telerik's arrows (or even mouseover them) bar backs to starting position and then moves. That means there is some variable holding "left" css property of he bar. <br>
The easiest way to achieve it would be detaching all the events for clicking/mouseover on arrows and windows resize. But even after window.onresize = null nothing changes. <br>
Is there some way to move this further without script in inerval?