//les options de la fenetre

var histoWindowOptions = "toolbar=no,location=no,directories=no,status=no" 

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

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

	var histoWindow;

function OpenHistoWindow(theFile) {

var done = false;

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

		histoWindow = this.open(theFile, "histoWindow", histoWindowOptions);

		done = true;

	} 

	if (done==false) {

		histoWindow.location.replace(theFile);

	}

	histoWindow.focus(); 

}