var navegador = navigator.userAgent.toLowerCase();
var xmlhttp;
function objetoXML() {
	if (navegador.indexOf('msie') != -1) {
		var controle = (navegador.indexOf('msie 5') != -1) ? 'Microsoft.XMLHTTP' : 'Msxml2.XMLHTTP';
		try {
			xmlhttp = new ActiveXObject(controle);
			} catch (e) { }
		} else {
		xmlhttp = new XMLHttpRequest();}
		}
function enviarForm(url, campos, destino) {
var elemento = document.getElementById(destino);
objetoXML();
if (!xmlhttp) {
elemento.innerHTML = 'Impossível iniciar o objeto XMLHttpRequest.';
return;
} else {
elemento.innerHTML = '<h1>Enviand<img src="images/loading.gif" width="15" height="15">...</h1>';
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 || xmlhttp.readyState == 0) {
if (xmlhttp.status == 200) {
elemento.innerHTML = xmlhttp.responseText;
} else {
	elemento.innerHMTL = 'Página não encontrada!';
	}}}
 xmlhttp.open('POST', url+'?'+campos, true);
 xmlhttp.send(campos);
}

function FP_jumpMenu(el,frm,sel) {//v1.0 
var href=el.options[el.selectedIndex].value; if(sel) el.selectedIndex=0; 
if('_new'==frm) open(href); else eval(frm+".location='"+href+"'"); 
} 

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

function ajax(url)
{
req = null;
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
req.onreadystatechange = processReqChange;
req.open("GET",url,true);
req.send(null);
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req) {
req.onreadystatechange = processReqChange;
req.open("GET",url,true);
req.send();
}
}
}
function processReqChange()
{
if (req.readyState == 4) {
if (req.status ==200) {
document.getElementById('pagina').innerHTML = req.responseText;
} else {
alert("Houve um problema ao obter os dados:n" + req.statusText);
}
}
} 
var scrolltotop={
setting: {startline:100, scrollto: 0, scrollduration:1000, fadeduration:[500, 100]},
controlHTML: '<img src="images/upBox.gif" style="width:48px; height:48px" />',
controlattrs: {offsetx:5, offsety:5},
anchorkeyword: '#top',
state: {isvisible:false, shouldvisible:false},

scrollup:function(){
		if (!this.cssfixedsupport)
			this.$control.css({opacity:0})
		var dest=isNaN(this.setting.scrollto)? this.setting.scrollto : parseInt(this.setting.scrollto)
		if (typeof dest=="string" && jQuery('#'+dest).length==1)
			dest=jQuery('#'+dest).offset().top
		else
			dest=0
		this.$body.animate({scrollTop: dest}, this.setting.scrollduration);
	},

	keepfixed:function(){
		var $window=jQuery(window)
		var controlx=$window.scrollLeft() + $window.width() - this.$control.width() - this.controlattrs.offsetx
		var controly=$window.scrollTop() + $window.height() - this.$control.height() - this.controlattrs.offsety
		this.$control.css({left:controlx+'px', top:controly+'px'})
	},

	togglecontrol:function(){
		var scrolltop=jQuery(window).scrollTop()
		if (!this.cssfixedsupport)
			this.keepfixed()
		this.state.shouldvisible=(scrolltop>=this.setting.startline)? true : false
		if (this.state.shouldvisible && !this.state.isvisible){
			this.$control.stop().animate({opacity:1}, this.setting.fadeduration[0])
			this.state.isvisible=true
		}
		else if (this.state.shouldvisible==false && this.state.isvisible){
			this.$control.stop().animate({opacity:0}, this.setting.fadeduration[1])
			this.state.isvisible=false
		}
	},
	
	init:function(){
		jQuery(document).ready(function($){
			var mainobj=scrolltotop
			var iebrws=document.all
			mainobj.cssfixedsupport=!iebrws || iebrws && document.compatMode=="CSS1Compat" && window.XMLHttpRequest
			mainobj.$body=(window.opera)? (document.compatMode=="CSS1Compat"? $('html') : $('body')) : $('html,body')
			mainobj.$control=$('<div id="topcontrol">'+mainobj.controlHTML+'</div>')
				.css({position:mainobj.cssfixedsupport? 'fixed' : 'absolute', bottom:mainobj.controlattrs.offsety, right:mainobj.controlattrs.offsetx, opacity:0, cursor:'pointer'})
				.attr({title:'Voltar ao início da página'})
				.click(function(){mainobj.scrollup(); return false})
				.appendTo('body')
			if (document.all && !window.XMLHttpRequest && mainobj.$control.text()!='')
				mainobj.$control.css({width:mainobj.$control.width()})
			mainobj.togglecontrol()
			$('a[href="' + mainobj.anchorkeyword +'"]').click(function(){
				mainobj.scrollup()
				return false
			})
			$(window).bind('scroll resize', function(e){
				mainobj.togglecontrol()
			})
		})
	}
}

scrolltotop.init()

/***********************************************
* Scroll To Top Control script- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Project Page at http://www.dynamicdrive.com for full source code
***********************************************/