var linkuspage="http://www.interdesigner.com/linkus.htm";

function SubmitQuote(form)
{
  if (form.UserQuote.value.indexOf('http://') >= 0)
  { location.href = linkuspage; return; }

  if (form.Name.value == "")
  { alert("Please enter your name"); form.Name.focus(); return; }

  if (form.Email.value.indexOf('@', 0) == -1 ||
      form.Email.value.indexOf('.', 0) == -1)
  { alert("Please enter a valid email address, we just want to thank you sometime"); form.Email.focus(); return; }

  if (form.UserQuote.value == "")
  { alert("Your quote / opinion is empty... please enter your quote"); form.UserQuote.focus(); return; }

  form.submit();
}