function verifyCompatibleBrowser(){ 
    this.ver=navigator.appVersion 
    this.dom=document.getElementById?1:0 
    this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0; 
    this.ie4=(document.all && !this.dom)?1:0; 
    this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0; 
 
    this.ns4=(document.layers && !this.dom)?1:0; 
    this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5) 
    return this 
} 
bw=new verifyCompatibleBrowser();

function explorer(){
	if (navigator.appName.toLowerCase() != "netscape"){
		document.getElementById("divContainer").style.overflow = "hidden"
	}else{
		document.getElementById("divUpControl").style.display = "none";
		document.getElementById("divDownControl").style.display = "none";
		document.getElementById("line").style.display = "none";
	}
}
execOnload('explorer()');

 
var speed=40
 
var loop, timer 
 
function ConstructObject(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=MoveAreaUp;this.down=MoveAreaDown; 
    this.MoveArea=MoveArea; 
    this.obj = obj + "Object" 
    eval(this.obj + "=this") 
    return this 
} 
function MoveArea(x,y){ 
    this.x=x;this.y=y 
    this.css.left=this.x 
    this.css.top=this.y 
} 
 
 // caso aumentar a div , alterar os valores abaixo
function MoveAreaDown(move){ 
	if(this.y>-this.scrollHeight+objContainer.clipHeight){ 
    this.MoveArea(0,this.y-move)
    if(loop) setTimeout(this.obj+".down("+move+")",speed) 
		if (document.getElementById('divContent').style.top == "-600px"){
			this.y = -600
		}
	}
} 
function MoveAreaUp(move){ 
	if(this.y<0){ 
    this.MoveArea(0,this.y-move) 
    if(loop) setTimeout(this.obj+".up("+move+")",speed) 
	} 
} 
 
function PerformScroll(speed){ 
	if(initialised){ 
		loop=true; 
		if(speed>0) objScroller.down(speed) 
		else objScroller.up(speed) 
	} 
} 
 
function CeaseScroll(){ 
    loop=false 
    if(timer) clearTimeout(timer) 
} 
var initialised; 
function InitialiseScrollableArea(){ 
    objContainer=new ConstructObject('divContainer') 
    objScroller=new ConstructObject('divContent','divContainer') 
    objScroller.MoveArea(0,0) 
    objContainer.css.visibility='visible' 
    initialised=true; 
} 

	function scrollContentTo(y){
		objContainer=new ConstructObject('divContainer') 
	    objScroller=new ConstructObject('divContent','divContainer')
		objScroller.MoveArea(0,-y+1);
	}
	
	
/*PRELOAD IMAGEM DO SCROLL*/
function newImageScroll(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImagesScroll() {
	if (document.images && (preloadFlagScroll == true)) {
		for (var i=0; i<changeImagesScroll.arguments.length; i+=2) {
			document[changeImagesScroll.arguments[i]].src = changeImagesScroll.arguments[i+1];
		}
	}
}

var preloadFlagScroll = false;
function preloadImagesScroll() {
	if (document.images) {
		fgscroll_up_over = newImage("images/fgscroll_up-over.gif");
		fgscroll_down_over = newImage("images/fgscroll_down-over.gif");
		preloadFlagScroll = true;
	}
}
/*FIM PRELOAD IMAGEM DO SCROLL*/