function imprimir() {
	if (window.print){
		window.print();
	}else{
		alert("Para imprimir pressione Crtl+P.");
	}
}
function Troca(id)
{
document.getElementById(id).className = "NomeDaClasse";
}
function abre_pagina(pagina, largura, altura, esquerda, linha) {
var width = largura;
var height = altura;
var left = esquerda;
var top = linha;
var rolagem = '2';
window.open(pagina,'pagina','width='+width+' , height='+height+', top='+top+', left='+left+', scrollbars='+rolagem+',fullscreen=no');
}
function cont(cam, limite, cont){
var msg = document.getElementById(cam);
var cont = document.getElementById(cont);
cont.value = "Caracteres restatntes: "+(limite - msg.value.length);
var limite = limite;
if (msg.value.length >= limite) {
 		msg.value = msg.value.substring(0, limite-1);
 	}
}

//Aumentar e diminuir fonte
var tgs = new Array( 'div','td','tr', 'p', 'span');
var szs = new Array( 'xx-small','x-small','small','medium','large','x-large','xx-large' );
var startSz = 2;
function ts( trgt,inc ) {
  if (!document.getElementById) return
  var d = document,cEl = null,sz = startSz,i,j,cTags;
  sz += inc;
  if ( sz < 0 ) sz = 0;
  if ( sz > 6 ) sz = 6;
  startSz = sz;
  if ( !( cEl = d.getElementById( trgt ) ) ) cEl = d.getElementsByTagName( trgt )[ 0 ];
  cEl.style.fontSize = szs[ sz ];
  for ( i = 0 ; i < tgs.length ; i++ ) {
   cTags = cEl.getElementsByTagName( tgs[ i ] );
   for ( j = 0 ; j < cTags.length ; j++ ) cTags[ j ].style.fontSize = szs[ sz ];
  }
}

function Smile(x, Id){
document.getElementById(Id).value += " "+x;
}