Ok. It works with:
var editor1 = parent.document.getElementById('CE_Editor1_ID');
When i Exec:
editor1.ExecCommand("insertlink",false,"http://test.de");
I think it insert the Link But when i use the Function after this:
Window_CloseDialog(window);
The window closed correctly but it remove the Link, how can I close the Window But the Link should be always in the Editor?