// JavaScript Document
function valid_login(form){					

	if (form.username.value.length < 4){
		alert('User name not valid (>=4 caracters <=16).');
		return false;				
	}

	if (form.password.value.length < 5) {
		alert('Password not valid (>=5 caracters <=12).');
		return false;
	}

}

function valid_recover_password(form){

	if (form.username.value == "" && form.email.value == "")
	{
		alert('Insert user name or e-mail.');
		return false;
	}

	if (form.username.value.length < 4 && document.forms.forgot_password.username.value != ""){
		alert('Insert user name (>=5 caracters <=16).');
		return false;
	}

	if (!valid_Email(form.email.value) && form.username.value == "") {
		alert('E-mail not valid.');
		return false;
	}

}

function valid_Email(email){			

	email2='%'+email+'%';
	var re=/\%[a-z\-\_0-9]+(\.[a-z\-\_0-9]+)*@[a-z\-\_0-9]+(\.[a-z\-\_0-9]+)*\%/i;

	if (!email2.match(re)) {
		return false;
	}	

	var tam = email.length;
	var varA=0;
	var varB=0;

	for (i=0;i < tam;i++){
		caracter = email.substr(i,1);
		if(caracter == '@' && varA==0){
			varA = i;				
		}
		if(caracter == '.' && varA>0 && varB==0){
			varB = i;				
		}		
	}

	var str1 = email.substr(0,varA);
	var str2 = email.substr(varA+1,varB-(varA+1));
	var str3 = email.substr(varB+1,tam);

	if(str1.length < 2 || str2.length < 2 || str3.length < 2){
		return false;
	}

	return true;
}