var d = document;
var cont = -1;
var okToGo = false;
var paused = false;

get = function(id) {
	if(!arguments[1]) return document.getElementById(id);
	else document.getElementById(id).style[arguments[1]]=arguments[2];
}

function startSlide(){
	loadImages();
	if(!paused) timeoutId=setTimeout('changeImg(1)',4000);
}

function initialize(){
	timeoutId=0;
	textareaContent= get("painel-conteudo").value.split(/[\r\n]/i);
	
	Item = new Array();
	for(x=0,y=0;x<textareaContent.length;x++){
		if(textareaContent[x].length>10) Item[y++]=textareaContent[x].split('|');
	}
	if(Item.length==1) d.write('<style>#prox-ant{display:none;}</style>');
	atual = Math.random().toString().substring(2,6) % Item.length;
}

function startPanel(){
	initialize();
	if(arguments.length>0){
		if(!isNaN(arguments[0])) atual = arguments[0];
	}
	if(paused) {
		imgpause='on';
		altpause='alt="Ligar" title="Ligar"';
	} else {
		imgpause='off';
		altpause='alt="Parar" title="Parar"';
	}
	d.write('<div id="to-blend">')
	d.write('	<img src="'+Item[atual][0]+'" id="imgslide" name="img1" border="0">');
	d.write('</div>');
	/*
	d.write('<div id="prox-ant">');
	d.write('		<a href="javascript:void(0)" id="anterior" onclick="if(okToGo)changeImg(-1)">');
	d.write('			<font class=texto><img src="images/esq.gif" border="0"  style="vertical-align:middle;"/> anterior');
	d.write('		</font></a>');
	d.write('		<img src="images/pause-'+imgpause+'.gif" height="10" onclick="pauseSlide()" id="pause" '+altpause+' />');
	d.write('		<a href="javascript:void(0)" id="proximo" onclick="if(okToGo)changeImg(1)">');
	d.write('			<font class=texto>proximo <img src="images/dir.gif" border="0" style="vertical-align:middle;"/></font>');
	d.write('		</a>');
	d.write('</div>');
	*/
}

function pauseSlide(){
	if(paused){
		get('pause').src='images/pause-off.gif';
		get('pause').title='Parar'; get('pause').alt = 'Parar';
		paused=false;
		startSlide();
	}else{
		clearTimeout(timeoutId);
		get('pause').src='images/pause-on.gif';
		get('pause').title='Ligar'; get('pause').alt = 'Ligar';
		paused = true;
	}
}

function loadImages(){
	imgDsp = new Array();
	for(n=0;n<Item.length;n++){
		imgDsp[n]=new Image();
		imgDsp[n].src=Item[n][0];
	}
	okToGo = true;
}

function changeImg(id){
	clearTimeout(timeoutId);
	if(cont==-1) cont=0;
	cont++;
	atual+=parseInt(id);

	if(atual>Item.length-1) atual=0;
	if(atual<0) atual=Item.length-1;
	if(imgDsp[atual].complete==false){
		atual--;
		timeoutId = setTimeout('changeImg('+id+')',500);
		return;
	}
	if(d.all && navigator.userAgent.indexOf('Opera')==-1){
		try {
			oDiv = get('to-blend');
			oDiv.style.filter="blendTrans(duration=0.7)";
			oDiv.filters.blendTrans.apply();
			oDiv.filters.blendTrans.play();
			changeContent();
		} catch(e) {
			changeContent();
		}
	} else {
		blend();
	}
	if(!paused) timeoutId=setTimeout('changeImg(1)',4000);
}

function changeContent(){
	try{
		//d.img1.style.height = 'auto';
		//get('proximo').style.display = get('anterior').style.display = get('pause').style.display = 'block';
		d.img1.src=imgDsp[atual].src;
		bannerhref='';
		get('txt1').innerHTML=Item[atual][1];
	}catch(e){
	}
}

function blend(){
	try{
		var speed=7;
		var timer=0;
		for(i=100;i>0;i-=2)
			setTimeout('changeOpac('+i+')', timer++ * speed);
		setTimeout('changeContent()', timer * speed);
		for(i=0;i<=100;i+=2)
			setTimeout('changeOpac('+i+')', timer++ * speed);
	}catch(e){
	}
}

function changeOpac(opacity){
	try{
		var obj = get('to-blend').style;
		obj.opacity=(opacity/101);
		obj.MozOpacity=(opacity/101);
		obj.KhtmlOpacity=(opacity/101);
	}catch(e){
	}
}