// JavaScript Document
function validEmail(email){
  if (email == ""){
	return false
  }
  var invalidChars = " /\;:'"
  var badchar
  for(i=0;i < invalidChars.length;i++){
    badChar = invalidChars.charAt(i)
	if (email.indexOf(badChar,0) > -1){
	  return false
	}
  }
  atPos = email.indexOf("@",1)
  if (atPos == -1){
    return false
  }
  if (email.indexOf("@",atPos+1) > -1){
    return false
  }
  periodPos = email.indexOf(".",atPos)
  if (periodPos == -1){
    return false
  }
  if (periodPos+3 > email.length){
    return false
  }
return true
}