// The client event WindowStateChanging takes two parameters sender and e
// sender is the object which is raising the event
// e is the WindowStateCancelEventArgs
function WDW1_WindowStateChanging(sender, e) {
var wdw = $find("WebDialogWindow1");
//Gets the current window state of the dialog
var currentWindowState = e.get_currentWindowState();
//Gets the new window state of the dialog
var newWindowState = e.get_newWindowState();
if (newWindowState == 1) {
//Sets the ability to drag control by mouse to false
wdw.set_moveable(0);
}
}