// developed by Stanislav Melnichuk (IndiSign Planet), email: indi2000@pisem.net, ICQ: 251052470
function ValidateEmail(email) {
  if (email=="") {
    alert ("Email is required. Please enter");
    return false;
  }

  re = /^[\w-\.]+@([\w-]+\.)+([a-z]{2,4})$/i ;

  if(re.test(email)) {
    return true;
  } else {
    alert("Invalid E-mail. Please re-enter");
    return false;
  }

}

function ValidateLogin(login) {
  if (login == "") {
    alert ("Username field is required. Please enter");
    return false;
  }
	return true;
}

function ValidateURL(url) {
  if (url=="") {
    alert ("URL is required!");
    return false;
  }

  re = /^http:\/\//i;

  if(re.test(url)) {
    return true;
  } else {
    alert("Invalid URL. Please re-enter");
    return false;
  }

}