function validation() {    
    if (document.form.nome.value.length < 4) {
	    window.alert("Preencha o campo nome.");
		return false;
		}
		if (document.form.email.value.length < 4) {
	    window.alert("Preencha o campo e-mail.");
		return false;
	}
    if (document.form.ddd.value.length < 2) {
	    window.alert("Preencha o campo ddd.");
		return false;
	}
	if (document.form.fone.value.length < 8) {
	    window.alert("Preencha o campo telefone.");
		return false;
		}
		if (document.form.mensagem.value.length < 2) {
	    window.alert("Preencha o campo mensagem.");
		return false;
		}		
	return true;
}

var request = false;

if(window.XMLHttpRequest){
  request = new XMLHttpRequest();
}else if(window.ActiveXObject){
  request = new ActiveXObject("Microsoft.XMLHTTP");
}

function getData(source){
  if(request){
    var data = document.getElementById("textopor");
    request.open("GET",source);
    request.onreadystatechange = function(){
		if(request.readyState == 1) {
			data.innerHTML = 'Processando dados...';
		}
      if(request.readyState==4){
        data.innerHTML = request.responseText;
      }
    }
    request.send(null);
  }
}


function abrir(str)
{
tipWin1 = window.open(str,'representantes','top=30,left=30,toolbar=no,width=578,height=385,scrollbars=no,resizable=no');
}