//stats
function replaceText(text){
 while(text.lastIndexOf("&") > 0){
  text = text.replace('&', '[i-Stats]');
 }
 return text;
}

var web_referrer = replaceText(document.referrer);

istat = new Image(1,1);
istat.src = "http://www.cnvm.ch/statistiche/counter.php?sw="+screen.width+"&sc="+screen.colorDepth+"&referer="+web_referrer+"&page="+location.href;


//topbar navigation
offMessage = ""

function on(which,message){
   if (document.all||document.getElementById){
      which.className='BorderOn'
      if (document.getElementById) {document.getElementById("message").innerHTML = message}
         else {Message.innerHTML = message}
   }
}

function off(which){
   if (document.all||document.getElementById){
      which.className='BorderOff'
      if (document.getElementById) {document.getElementById("message").innerHTML = offMessage}
         else {Message.innerHTML = offMessage}
   }
}

//show form
window.defaultStatus = "";

function ShowHide(id, visibility) {
    obj = document.getElementsByTagName("div");
    obj[id].style.visibility = visibility;
}

//form guestbook check
function checkF()
{

	if(document.form.who.value=="")
	{
		alert("Prego inserire nome \n____________________________________");
		document.form.who.focus();
		return false;
	}	
	
	
	if(document.form.title.value=="")
	{
		alert("Prego inserire soggetto \n____________________________________");
		document.form.title.focus();
		return false;
	}	
		
	
	if(document.form.article.value=="")
	{
		alert("Prego inserire commento \n____________________________________");
		document.form.article.focus();
		return false;
	}
	
	if(document.form.gd_string.value=="")
	{
		alert("Prego inserire codice \n____________________________________");
		document.form.gd_string.focus();
		return false;
	}	


	
}	



// switch styles

function setActiveStyleSheet(title) {
  var i, a, main;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("title") &&
        !a.disabled
        ) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  var i, a;
  for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if (a.getAttribute("rel") &&
        a.getAttribute("rel").indexOf("style") != -1 &&
        a.getAttribute("rel").indexOf("alt") == -1 &&
        a.getAttribute("title")
        ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);