// functions to create, read and erase cookies
	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 var 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 eraseCookie(name) {
		createCookie(name,"",-1);
	}


	function keyDown(e) {
		var evt=(e)?e:(window.event)?window.event:null;

		if(evt){

			var key=(evt.charCode)?evt.charCode:
				((evt.keyCode)?evt.keyCode:((evt.which)?evt.which:0));

			//Alt+1 - Activa e desactiva o menu audio
			if(evt.altKey && key=="49"){
				if(!active){
					active = true;
					if(document.flashMP3 != null)
						document.flashMP3.SetVariable("player:jsStop", "");
					playActive();
					createCookie("readContent", 1, 0);
					level=1;
					flashOn=false;
				}else{
				    active = false;
				    window.focus();
					if(document.getElementById("mp3playerMenu") != null)
						document.mp3playerMenu.SetVariable("player:jsPause", "");
					if(document.flashMP3 != null)
						document.flashMP3.SetVariable("player:jsStop", "");
					eraseCookie("readContent");
					flashOn=false;
					opt=0;
					level=1;
				}
			//Shift - restart da mp3 do conteudo
			}else if (key=="16" && active && level == 3){
				document.flashMP3.SetVariable("player:jsStop", "");
				document.flashMP3.SetVariable("player:jsPlay", "");
			//Arrow down - retroceder na faixa audio
			}else if (key=="38" && flashOn && active && level == 3){
				document.flashMP3.SetVariable("player:jsLeft", "");
			//Arrow up - avançar na faixa audio
			}else if (key=="40" && flashOn && active && level == 3){
				document.flashMP3.SetVariable("player:jsRight", "");
			//+ Aumenta o volume
			}else if ((key=="107" || key=="187") && flashOn && active && level == 3){
				document.flashMP3.SetVariable("player:jsVolumeUp", "");
			//- Diminui o volume
			}else if ((key=="109" || key=="189") && flashOn && active && level == 3){
				document.flashMP3.SetVariable("player:jsVolumeDown", "");
			//Crtl - pausa a leitura do conteudo e activa o menu audio ou desactiva o menu audio e activa a leitura do conteudo
			}else if (key=="17" && active && level == 3){
				if(flashOn){
					//pausa o audio
					flashOn=false;
					document.flashMP3.SetVariable("player:jsPause", "");
				}
				else {
					//activa o audio e desactiva a leitura do menu
					flashOn=true;
					if(document.getElementById("mp3playerMenu") != null)
						document.mp3playerMenu.SetVariable("player:jsPause", "");
					document.flashMP3.SetVariable("player:jsPlay", "");
				}
			//Arrow left and Arrow right - navegar nas opções de menu
			}else if(key=="39" && active || key=="37" && active) {
				//Pausa o audio e para se ouvir o menu
				if(flashOn){
					flashOn=false;
					document.flashMP3.SetVariable("player:jsPause", "");
				}
                if(key=="39")
					opt++;
				else
					opt--;

				if(level==1){
					if(opt > menuMp3.length-1)//menu 360º
						opt=0;
					else if (opt < 0)//menu 360º
						opt=menuMp3.length-1;
					document.getElementById("audioMenu").innerHTML = playAudio(menuMp3[opt]);
				}else if(level==2){
					if(opt > subMenuMp3.length-1)
						opt=0;
					else if (opt < 0)
						opt=subMenuMp3.length-1;
					document.getElementById("audioMenu").innerHTML = playAudio(subMenuMp3[opt]);
				}else if(level==3){
					if(opt > sub2MenuMp3.length-1)
						opt=0;
					else if (opt < 0)
						opt=sub2MenuMp3.length-1;
					document.getElementById("audioMenu").innerHTML = playAudio(sub2MenuMp3[opt]);
				}
			//Space - Ir para opção
			}else if(key=="32" && active){
				if(opt==-1)
					opt=0;
				if(level==1)
					window.location.href = menuMp3URL[opt];
				if(level==2)
					window.location.href = subMenuMp3URL[opt];
				if(level==3)
					window.location.href = sub2MenuMp3URL[opt];

			}
		}
	}

	function playAudio(nameFile){
			var playerAudio ="<EMBED src='/flash/TTSplayer.swf' FlashVars='mp3="+nameFile+".mp3&amp;autoplay=1&amp;audiomenu=1&amp;showstop=1&amp;showvolume=1&amp;bgcolor1=820096&amp;bgcolor2=4b0058' quality=high name='mp3playerMenu' WIDTH='1' HEIGHT='1' ALIGN='' TYPE='application/x-shockwave-flash' wmode='transparent' PLUGINSPAGE='http://www.macromedia.com/go/getflashplayer'></EMBED>";
		return playerAudio;
	}