// JavaScript Document

var nameCookieStyle=document.domain + "-Style";
var cookie = readCookie(nameCookieStyle);
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);


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

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

function tagliaStringa(stringa, max_char){
		if(strlen(stringa)>max_char){
			stringa_tagliata=substr(stringa, 0,max_char);
			last_space=strrpos(stringa_tagliata," ");
			stringa_ok=substr(stringa_tagliata, 0,last_space);
			return stringa_ok + "...";
		}else{
			return stringa;
		}
	}
	
//imposta il foglio di stile
function setActiveStyleSheet(title) {
  if ((String(title) == "null") || (String(title) == "") || (String(title) == null)) {title = "standard";}
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(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").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").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;
}

function intercetta() {
    for (var i=0; i<document.links.length; i++)
        if ((document.links[i].className=="blank")||(document.links[i].className=="blank_link_verde")||(document.links[i].className=="blank_link_verde_under") ) {
            document.links[i].target="_blank";
        }
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
window.open(theURL,winName,features);
}

//----------