All Telerik .NET tools and Kendo UI JavaScript components in one package. Now enhanced with:
Hello Matjaž,
The width option of Kendo Window supports only pixel and percent values.
If you want the initial size to be set in em you should can do that with a single line of JavaScript:
$(
"#dialog"
).kendoWindow();
).data(
"kendoWindow"
).wrapper.width(
"16em"
);
The same applies for the height option of Kendo Window.