i found a problem when we use rtl solution that suggested by yaf
that control panel section need to stay LTR
for solving this problem you need to modify AdminMenu control
in first line of render void :

protected override void Render(System.Web.UI.HtmlTextWriter writer)
{
writer.WriteLine(@"<table dir=""ltr"" width=""100%""

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for applying rtl to main site i suggest that u add a DIV element at root of BODY
this just because avoiding from changing scrollbar side