/////////////////////// funções para andar as noticias ///////////////////////////
function lib_bwcheck(){ //Browsercheck (needed)
	this.ver=navigator.appVersion;
	this.agent=navigator.userAgent;
	this.dom=document.getElementById?1:0;
	this.opera5=this.agent.indexOf("Opera 5")>-1;
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera5)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6;
	this.mac=this.agent.indexOf("Mac")>-1
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5);
	return this;
}
var bw=new lib_bwcheck();

//timeout para a andar mais rápido ou mais devagar:
var speedAll = 60;

//variávei de controlo
var loop, timer;

//construção do objecto
function makeObj(obj,nest){
    nest=(!nest) ? "":"document."+nest+"."
	this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+"document."+obj):0;
  	this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+"document."+obj):0;
	this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight;
	this.clipHeight=bw.ns4?this.css.clip.height:this.el.offsetHeight;
	this.up=goUp;
	this.down=goDown;
	this.moveIt=moveIt;
	this.x=0; this.y=0;
    this.obj = obj + "Object";
    eval(this.obj + "=this");
    return this;
}

// unidade para posicionamento do layer
var px = bw.ns4||window.opera?"":"px";

function moveIt(x,y){
	this.x = x;
	this.y = y;
	this.css.left = this.x+px;
	this.css.top = this.y+px;
}

//faz o objecto ir para cima
function goDown(move){

	if (this.y>-this.scrollHeight+oCont.clipHeight){
		this.moveIt(0,this.y-move);
		if (loop)
		{
			clearTimeout(timer);
			timer = setTimeout(this.obj+".down("+move+")",speedAll);
		}
	}
	else{
		this.y = 20;
		this.moveIt(0,this.y-move);
		if (loop)
		{
			clearTimeout(timer);
			timer = setTimeout(this.obj+".down("+move+")",speedAll);
		}
	}

}
//faz o objecto ir para baixo
function goUp(move){
	move = 1;
	if (this.y<0){
		this.moveIt(0,this.y-move)
		//if (loop) setTimeout(this.obj+".up("+move+")",speedAll)
	}
}

//chama a função scrollDown e verifica se já está carregado
function scroll(speed){
	if (scrolltextLoaded){
		loop = true;
		if (speed == 1) oScroll.down(1);
		//if (speed == 1) oScroll.down(speed);
	}
}

//pára o scroll
function noScroll(){
	loop = false;
	if (timer) clearTimeout(timer);
}

//faz o objecto
var scrolltextLoaded = false;
function scrolltextInit(){
	oCont = new makeObj("divScrollTextCont");
	oScroll = new makeObj("divText","divScrollTextCont");
	//oScroll.moveIt(0,50);
	oCont.css.visibility = "visible";
	scrolltextLoaded = true;
	scroll(1);
}
//chama a função scrolltextinit se o check ao browser correr bem
//if (bw.bw) onload = scrolltextInit;