var ns6=document.getElementById&&!document.all
function restrictinput(maxlength,e,placeholder){
if(window.event&&event.srcElement.value.length>=maxlength)
return false
else if(e.target&&e.target==eval(placeholder)&&e.target.value.length>=maxlength){
var pressedkey=/[a-zA-Z0-9\.\,\/]/
if(pressedkey.test(String.fromCharCode(e.which)))
e.stopPropagation()}}
function countlimit(maxlength,e,placeholder){
var theform=eval(placeholder)
var lengthleft=maxlength-theform.value.length
var placeholderobj=document.all? document.all[placeholder] : document.getElementById(placeholder)
if(window.event||e.target&&e.target==eval(placeholder)){
if(lengthleft<0)
theform.value=theform.value.substring(0,maxlength)
placeholderobj.innerHTML=lengthleft}}
function displaylimit(thename,theid,thelimit){
var theform=theid!=""? document.getElementById(theid): thename
var limit_text='<b><span id="'+theform.toString()+'">'+thelimit+'</span></b> caracteres disponiveis para escrita.'
if(document.all||ns6)
document.write(limit_text)
if(document.all){
eval(theform).onkeypress=function(){return restrictinput(thelimit,event,theform)}
eval(theform).onkeyup=function(){countlimit(thelimit,event,theform)}}
else if(ns6){
document.body.addEventListener('keypress',function(event){restrictinput(thelimit,event,theform)},true)
document.body.addEventListener('keyup',function(event){countlimit(thelimit,event,theform)},true)}}