function validaemail(){
	if(document.news_letter.email.value.indexOf("@") == -1){
		alert("Por favor, informe um e-mail")
		news_letter.email.focus()
		return false
	} else{
		return true
	}	
}


function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}
function txtBoxFormat(objForm, strField, sMask, evtKeyPress) {
  var i, nCount, sValue, fldLen, mskLen,bolMask, sCod, nTecla;

  if(document.all) { // Internet Explorer
	nTecla = evtKeyPress.keyCode; }
  else if(document.layers) { // Nestcape
	nTecla = evtKeyPress.which;
  }
  
  sValue = objForm[strField].value;
  sValueF = objForm[strField].value;

  // Limpa todos os caracteres de formatação que
  // já estiverem no campo.
  sValue = sValue.toString().replace( "-", "" );
  sValue = sValue.toString().replace( "-", "" );
  sValue = sValue.toString().replace( ".", "" );
  sValue = sValue.toString().replace( ".", "" );
  sValue = sValue.toString().replace( "/", "" );
  sValue = sValue.toString().replace( "/", "" );
  sValue = sValue.toString().replace( "(", "" );
  sValue = sValue.toString().replace( "(", "" );
  sValue = sValue.toString().replace( ")", "" );
  sValue = sValue.toString().replace( ")", "" );
  sValue = sValue.toString().replace( " ", "" );
  sValue = sValue.toString().replace( " ", "" );
  sValue = sValue.toString().replace( ":", "" );
  sValue = sValue.toString().replace( ":", "" );
  fldLen = sValue.length;
  mskLen = sMask.length;
  mskLenF = sMask.length;
 
  i = 0;
  nCount = 0;
  sCod = "";
  mskLen = fldLen;

  while (i <= mskLen) {
	bolMask = ((sMask.charAt(i) == "-") || (sMask.charAt(i) == ".") || (sMask.charAt(i) == "/") || (sMask.charAt(i) == ":"))
	bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))

	if (bolMask) {
	  sCod += sMask.charAt(i);
	  mskLen++; }
	else {
	  sCod += sValue.charAt(nCount);
	  nCount++;
	}

	i++;
  }

  objForm[strField].value = sCod;

  if (nTecla != 8) { // backspace
	if (sMask.charAt(i-1) == "9") { // apenas números...
	  return ((nTecla > 47) && (nTecla < 58)); } // números de 0 a 9
	else { // qualquer caracter...
	  return true;
	} }
  else {
	return true;
  }
}
function autotab(current,to){
    if (current.getAttribute && 
      current.value.length==current.getAttribute("maxlength")) {
        to.focus() 
        }
}
function MM_openBrWindow(theURL,winName,features) { //v2.0
 janela = window.open(theURL,winName,features);
//interceptacao de erro na abertura da janela
text = "Se a janela nao estava abrindo\ntalvez seja porque voce tenha um\nprograma bloqueador de pop-up!\nObservacao » O windows XP service pack 2\nbloqueia pop-ups!";
if(janela == null) { alert(text); return; }
//fim
//janela.moveTo(350,150);
//win2.creator=self;
}

var bookmarkurl=document.location
var bookmarktitle=document.title

function addbookmark(){
if (document.all)
window.external.AddFavorite(bookmarkurl,bookmarktitle)
}
function volta_pagina(){
	window.history.back(0);
};