function CSClickReturn () {
  var bAgent = window.navigator.userAgent; 
  var bAppName = window.navigator.appName;
  if ((bAppName.indexOf("Explorer") >= 0) && (bAgent.indexOf("Mozilla/3") >= 0) && (bAgent.indexOf("Mac") >= 0))
    return true; // dont follow link
  else return false; // dont follow link
}
		

// Open window per immagini, versione con nome finestra.
function apri1(theUrl) {
  // come bivioOImgS ma con target.....
  // parametri inline:
  //  'theUrl,'bivioImgWinTarget',700,600,false,false,false,false,false,false,true
	var wf = "";
      	wf = wf + "width=" + "850";
	wf = wf + ",height=" + "700";
  	wf = wf + ",resizable=yes";
  	wf = wf + ",scrollbars=yes";
  	wf = wf + ",menubar=yes";
//  	wf = wf + ",toolbar=yes";
//  	wf = wf + ",directories=yes";
//  	wf = wf + ",location=yes";
	wf = wf + ",status=yes";

	var newWindow = window.open(theUrl,'',wf);
	newWindow.focus();

  return CSClickReturn();
}