function verifica3(form) {
    if (form.nome.value.length < 3) {
		alert('Por favor, preencha o campo NOME');
		form.nome.focus();
		return false;
	}
	if (form.email.value.indexOf('@') == -1) {
		alert('E-mail inválido');
		form.email.focus();
		return false;
			}
	if (form.email.value.indexOf('.com') == -1) {
		alert('E-mail inválido');
		form.email.focus();
		return false;
			}	
 	if (form.tel.value.length < 7) {
		alert('Por favor, informe o DDD e o TELEFONE');
		form.ddd.focus();
		return false;
	       }
	if (form.cidade.value.length < 3) {
		alert('Por favor, informe a CIDADE');
		form.cidade.focus();
		return false;
	       }
	if (form.estado.value.length < 2) {
		alert('Por favor, informe o ESTADO');
		form.estado.focus();
		return false;
	       }
   if (form.onde.value == '0') {
		alert('Por favor, informe ONDE nos achou');
		form.onde.focus();
		return false;
	       }
  if (form.departamento.value == '0') {
		alert('Por favor, informe o DEPARTAMENTO');
		form.departamento.focus();
		return false;
	       }
	if (form.mens.value.length < 6) {
		alert('Por favor, preencha sua MENSAGEM');
		form.mens.focus();
		return false;
	}
}

// ************************************************************************************************************************

<!-- Begin
function NewWindow(mypage, myname, w, h, scroll) {
var wint = (screen.height - h) / 2;
var winl = (screen.width - w) / 20;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+''
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

// ************************************************************************************************************************