function checkdata() {
var f = document.forms[2];
for(i=0; i < 1 ; i++)
//for(i=0; i < f.elements.1; i++)
{
	if (f.elements[i].type == "textarea" || f.elements[i].type == "text" )
	{
		
		f.elements[i].value = f.elements[i].value.toUpperCase();
		var valor = f.elements[i].value;
		valor = valor.replace(/Á/g, "A");
		valor = valor.replace(/Ã/g, "A");
		valor = valor.replace(/À/g, "A");
		valor = valor.replace(/Â/g, "A");
		valor = valor.replace(/È/g, "E");
		valor = valor.replace(/É/g, "E");
		valor = valor.replace(/Ê/g, "E");
		valor = valor.replace(/Í/g, "I");
		valor = valor.replace(/Ì/g, "I");
		valor = valor.replace(/Î/g, "I");
		valor = valor.replace(/Ĩ/g, "I");
		valor = valor.replace(/Ò/g, "O");
		valor = valor.replace(/Ó/g, "O");
		valor = valor.replace(/Õ/g, "O");
		valor = valor.replace(/Ô/g, "O");
		valor = valor.replace(/Ú/g, "U");
		valor = valor.replace(/Û/g, "U");
		valor = valor.replace(/Ù/g, "U");
		valor = valor.replace(/Ũ/g, "U");
		valor = valor.replace(/Ç/g, "C");
		f.elements[i].value = valor;
		//alert (f.elements[i].name)
		//alert (valor);
	}
}
//alert("chegou aki");
//alert(document.cad);
	with(document.cad) {	
	        if (nome.value == "") {
			alert("É necessário digitar o nome");
			nome.focus();
			return false; }
		 if (! isValidEmail(document.forms[2].email.value)) {
        		alert("E-mail inválido");
        		return false;
			
    			}
                        submit();
	
}
}	
function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    }
	
    return true;
}

function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}
//e na index ponha a seguinte linha:
//document.cad.email.value = document.cad.email.value.toLowerCase();
//na procedure de abrir o form