Aiuto con pulsanti per chiudere finestre

[Vindav]

dichiara le due variabili come globali...

<script type="text/javascript" language="JavaScript">
	
var myYahooWindow;
var myGmailWindow;

	function openNewYahooWindow()
	{
	  myYahooWindow = window.open("http://www.yahoo.com","newYahooWindow");
	}
	
	
	function openNewGmailWindow()
	{
	  myGmailWindow = window.open("http://www.gmail.com","newGmailWindow");
	}
	
	
	function closeNewYahooWindow()
	{
	  myYahooWindow.close();
	}
	
	
	function closeNewGmailWindow()
	{
	  myGmailWindow.close();
	}
		
	</script>