var cssAltavisibilitaContent = '<a href="javascript:impostaVisibilita()">ALTA VISIBILIT&Agrave;</a> &nbsp;&nbsp;';
var cssSoloTestoContent = '<a href="javascript:impostaSoloTesto()">Solo Testo</a> ';
var cssStandardContent = '<a href="javascript:impostaStandard()">Standard</a>&nbsp;|&nbsp;';
function impostaVisibilita(){
  cambiaStyleSheet('Visibilita');
}

function impostaSoloTesto(){
  cambiaStyleSheet('Testo');
}

function impostaStandard(){
  cambiaStyleSheet('Standard');
}

function impostaCssIniziale(){
  if ("" != document.cookie) {
    var cookieList = document.cookie.split("; ");
    for (var i = 0; i < cookieList.length; i++) {
      var name = cookieList[i].split("=");
      if(unescape(name[0])=="CssStyleType"){
        cambiaStyleSheet(unescape(name[1]));
      }
    }
  }
}


function cambiaStyleSheet(titolo){
  if(esisteCss(titolo)){
    var labels = new Array();
    for (i=0; i<document.styleSheets.length; i++){
      if (document.styleSheets[i].title==titolo){
        document.styleSheets[i].disabled=false;
        document.cookie="CssStyleType="+titolo+";path=/;domain=valdomain.local";
      }
      else{
	    if(document.styleSheets[i].title=='Visibilita'
	     ||document.styleSheets[i].title=='Testo'
	     ||document.styleSheets[i].title=='Standard'){
          document.styleSheets[i].disabled=true;
        }
      }
    }
   if(titolo=="Visibilita"){
      labels[0]=cssStandardContent;
      labels[1]=cssSoloTestoContent;
    }
    else if(titolo=="Testo"){
      labels[0]=cssStandardContent;
      labels[1]=cssAltavisibilitaContent;
    }
    else{
      labels[0]=cssAltavisibilitaContent;
      labels[1]=cssSoloTestoContent;
    }
    impostaLabels(labels);
  }
}

function esisteCss(titolo){
  for (i=0; i<document.styleSheets.length; i++){
    if (document.styleSheets[i].title==titolo){
      return true;
    }
  }
  return false;
}

function impostaLabels(labels){
  if (document.all){
    document.getElementById("ccslabel0").innerHTML=labels[0];
    document.getElementById("ccslabel1").innerHTML=labels[1];
  }
  else if (document.getElementById){
    setDomText("ccslabel0",labels[0]);
    setDomText("ccslabel1",labels[1]);
  }
}

function setDomText(divname, text){
    rng = document.createRange();
    el = document.getElementById(divname);
    rng.setStartBefore(el);
    htmlFrag = rng.createContextualFragment(text);
    while (el.hasChildNodes()) el.removeChild(el.lastChild);
    el.appendChild(htmlFrag);
}

////////////////////////
var BrowserDetect = {
				init: function () {
					this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
					this.version = this.searchVersion(navigator.userAgent)
						|| this.searchVersion(navigator.appVersion)
						|| "an unknown version";
					this.OS = this.searchString(this.dataOS) || "an unknown OS";
				},
				searchString: function (data) {
					for (var i=0;i<data.length;i++)	{
						var dataString = data[i].string;
						var dataProp = data[i].prop;
						this.versionSearchString = data[i].versionSearch || data[i].identity;
						if (dataString) {
							if (dataString.indexOf(data[i].subString) != -1)
								return data[i].identity;
						}
						else if (dataProp)
							return data[i].identity;
					}
				},
				searchVersion: function (dataString) {
					var index = dataString.indexOf(this.versionSearchString);
					if (index == -1) return;
					return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
				},
				dataBrowser: [
					{ 	string: navigator.userAgent,
						subString: "OmniWeb",
						versionSearch: "OmniWeb/",
						identity: "OmniWeb"
					},
					{
						string: navigator.vendor,
						subString: "Apple",
						identity: "Safari"
					},
					{
						prop: window.opera,
						identity: "Opera"
					},
					{
						string: navigator.vendor,
						subString: "iCab",
						identity: "iCab"
					},
					{
						string: navigator.vendor,
						subString: "KDE",
						identity: "Konqueror"
					},
					{
						string: navigator.userAgent,
						subString: "Firefox",
						identity: "Firefox"
					},
					{
						string: navigator.vendor,
						subString: "Camino",
						identity: "Camino"
					},
					{		// for newer Netscapes (6+)
						string: navigator.userAgent,
						subString: "Netscape",
						identity: "Netscape"
					},
					{
						string: navigator.userAgent,
						subString: "MSIE",
						identity: "Explorer",
						versionSearch: "MSIE"
					},
					{
						string: navigator.userAgent,
						subString: "Gecko",
						identity: "Mozilla",
						versionSearch: "rv"
					},
					{ 		// for older Netscapes (4-)
						string: navigator.userAgent,
						subString: "Mozilla",
						identity: "Netscape",
						versionSearch: "Mozilla"
					}
				],
				dataOS : [
					{
						string: navigator.platform,
						subString: "Win",
						identity: "Windows"
					},
					{
						string: navigator.platform,
						subString: "Mac",
						identity: "Mac"
					},
					{
						string: navigator.platform,
						subString: "Linux",
						identity: "Linux"
					}
				]
			
			};
			BrowserDetect.init();