var aux = 10;
function alterarFonte(id, acao){
  if(acao == 'maior'){
    if(aux < 16) aux += 1;
  }
  else{
    if(aux > 10) aux -= 1;
  }

		document.getElementById(id).style.fontSize = aux+'px';
}
//------------------------------------------------------------
function trim(stringToTrim) {
	 return stringToTrim.replace(/^\s+|\s+$/g,'');
}

var ok = 0;
function validarForm() {
  var path = document.fale;
		
  if (trim(path.nome.value).length == 0) {
      window.alert('Por favor, preencha o campo NOME.');
      path.nome.focus();
      return false;
  }		
  if (path.email.value.search(/^[a-zA-Z][\.\w-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/) == -1 || path.email.value.search(/\.{2,}|\.-|-\.|-{2,}|\._|_\./) > -1) {
	    window.alert ('Preencha seu E-MAIL corretamente.');
	    path.email.focus();
	    return false;
	 }
  if (trim(path.mensagem.value).length == 0) {
      window.alert('Por favor, preencha o campo MENSAGEM.');
      path.mensagem.focus();
      return false;
  }			
  if (ok == 1) {
      window.alert('Aguarde! Sua MENSAGEM está sendo enviada.');
      return false;
  } 
  ok = 1;
  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 MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

var url = 'imagens/menu/';
document.onload = MM_preloadImages(url+'bt_01_over.gif', url+'bt_02_over.gif', url+'bt_03_over.gif', url+'bt_04_over.gif', url+'bt_05_over.gif', url+'bt_06_over.gif');