//-----------------------------------------------------------------------------------------------------------------------
function isEmail(mail){
    var er = new RegExp(/^[A-Za-z0-9_\-\.]+@[A-Za-z0-9_\-\.]{2,}\.[A-Za-z0-9]{2,}(\.[A-Za-z0-9])?/);
    if(typeof(mail) == "string"){
        if(er.test(mail)){ return true; }
    }else if(typeof(mail) == "object"){
        if(er.test(mail.value)){
                    return true;
                }
    }else{
        return false;
        }
}
//-----------------------------------------------------------------------------------------------------------------------
function trim(aString) {
  result = String( aString ).replace( /^[\s]+/g , "" );
  return result.replace( /[\s]+$/g,"" );
}
//-----------------------------------------------------------------------------------------------------------------------
function isBranco(aString) {  
  return (aString == null || trim(aString) == '');  
}
//-----------------------------------------------------------------------------------------------------------------------
function imprime(aString) {
  alert(aString);
}