function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
  result = true;
  }
  return result;}

function validRequired(formField,fieldLabel)
{
  var result = true;
  if (formField.value == "")
  {
    alert('Please enter a value for the "' + fieldLabel +'" field.');
    formField.focus();
    result = false;
  }
  return result;}

function validEmail(formField,fieldLabel,required)
{
  var result = true;
  if (required && !validRequired(formField,fieldLabel))
    result = false;

  if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
  {
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    formField.focus();
    result = false;
  }  
  return result;}


function validNum(formField,fieldLabel,required)
{
  var result = true;
  if (required && !validRequired(formField,fieldLabel))
    result = false;
   if (result)
   {
     var num = parseInt(formField.value,10);
     if (isNaN(num))
     {
       alert('Please enter a number for the "' + fieldLabel +'" field.');
      formField.focus();    
      result = false;
    }
  }   
  return result;}

function validDate(formField,fieldLabel,required)
{
  var result = true;
  if (required && !validRequired(formField,fieldLabel))
    result = false;
   if (result)
   {
     var elems = formField.value.split("/");
     result = (elems.length == 3); // should be three components
     if (result)
     {
       var day = parseInt(elems[0],10);
        var month = parseInt(elems[1],10);
       var year = parseInt(elems[2],10);
      result = !isNaN(month) && (month > 0) && (month < 13) &&
            !isNaN(day) && (day > 0) && (day < 32) &&
            !isNaN(year) && (elems[2].length == 4);
     }
      if (!result)
     {
       alert('Please enter a date in the format DD/MM/YYYY for the "' + fieldLabel +'" field.');
      formField.focus();    
    }
  } 
  return result;}
  
  
var submitcount=0;


function validateFormRegister(theForm)
{
  if (!validRequired(theForm.name,"Name"))
    return false;
  if (!validRequired(theForm.position,"Position"))
    return false;
  if (!validRequired(theForm.organisation,"Organisation"))
    return false;		
  if (!validRequired(theForm.street,"Street"))
    return false;
  if (!validRequired(theForm.suburb,"Suburb"))
    return false;
  if (!validRequired(theForm.state,"State"))
    return false;
  if (!validRequired(theForm.postcode,"Postcode"))
    return false;	
  if (!validRequired(theForm.phone,"Phone",true))
    return false;
   if (!validEmail(theForm.email,"Email",true))
    return false; 	
  return true;
}

function validateFormUpdates(theForm)
{
  if (!validRequired(theForm.name,"Name"))
    return false;
  if (!validRequired(theForm.organisation,"Venue/Organisation"))
    return false;		
   if (!validEmail(theForm.email,"Email",true))
    return false; 	
  return true;
}