OnPaste listeners get executed twice

[fredck]

When defining an OnPaste listener inline in the page, the target function get executed twice. It has been tested with IE7 only.

Steps to Reproduce

1. Insert the following code at the top of sample01.html:

<script type="text/javascript">

function FCKeditor_OnComplete( editorInstance )
{
	editorInstance.Events.AttachEvent( 'OnPaste', myPasteListener ) ;
}

var myCounter = 0 ;

function myPasteListener( editorInstance )
{
	var textHtml = editorInstance.GetClipboardHTML() ;

	window.top.document.title = ++myCounter ;

	editorInstance.InsertHtml( textHtml.toLowerCase() ) ;

	return false ;
}
</script>

2. Open the page and try to paste. Note that the data is pasted twice, and the counter steps two numbers in the window title bar.

[fredck]

Fixed with [587].

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