Right-to-left Support
The RadWindow fully supports right-to-left (RTL) language locales. The RadWindows are rendered to the page as children of the form element and in order to turn on the RTL support you should set dir=rtl to the html or body elements.
html
{
direction: rtl;
}
<telerik:RadWindow RenderMode="Lightweight" runat="server" Width="550" Title="RadWindow can be used in right-to-left scenarios"
Height="450px" VisibleOnPageLoad="true" NavigateUrl="http://www.bing.com/" Skin="Sunset"
ID="Radwindow1">
</telerik:RadWindow>