function getElementsByClass(searchClass,node,tag) {
  var classElements = new Array();
  
  if (node == null)
    node = document;
  if (tag == null)
    tag = '*';
 
  var els = node.getElementsByTagName(tag);
  var elsLen = els.length;
  //Espressione regolare
  var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
  //Riempimento vettore
  for (i = 0, j = 0; i < elsLen; i++) {
    if (pattern.test(els[i].className) ) {
      classElements[j] = els[i];
      j++;
    }
  }
  return classElements;
}

// Funzioni di manipolazione dei cookie

function setCookie(name, value, expdays) {
  var now = new Date();
  var exp = new Date(now.getTime() + (1000*60*60*24*expdays));
  document.cookie = name + "=" + escape(value) + ";" +
                    "expires=" + exp.toGMTString() + ";" +
                    "path=/";
}

function delCookie(name) {   // fa scadere il cookie
  var now = new Date();
  var exp = new Date(now.getTime() - 1);
  document.cookie = name + "=;" +
                    "expires=" + exp.toGMTString() + ";" + 
                    "path=/";
}

function getCookie(name) {   // restituisce il valore del cookie
  var cname = name + "=";
  var dc = document.cookie;
  if (dc.length > 0) {
    var start = dc.indexOf(cname);
    if (start != -1) {
      start += cname.length;
      var stop = dc.indexOf(";", start);
      if (stop == -1) stop = dc.length;
      return unescape(dc.substring(start,stop));
    }
  }
  return null;
}

function writeFlashBackground(movieName, isLoop) {

	var strPlayerName = "flashBackground.swf";
	var so = new SWFObject(strPlayerName, "flashBackground", "100%", "100%", "9", "#ffffff");
	
	so.addParam("quality", "best");
	so.addParam("wmode", "transparent");
	so.addParam("salign", "t");
	so.addParam("scale", "exactfit");
	so.addVariable("strMovieName", movieName);
	so.addVariable("isLoop", isLoop);
	
	so.write("js_flashBackground");

}