//les options de la fenetre

var ExternWindowOptions = "toolbar=yes,location=yes,directories=no,status=no" 

	+ ",menubar=no,scrollbars=yes,resizable=yes" 

	+ ",width=770,height=540";

	var ExternWindow;

function OpenExternWindow(theFile) {

	if ((ExternWindow == null) || (ExternWindow.closed)){ 

		ExternWindow = this.open(theFile, "ExternWindow", ExternWindowOptions);

	} 

	ExternWindow.location.replace(theFile);

	ExternWindow.focus(); 

}