//Form validation
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;
}

//Trim whit spaces
function trimAll(sString) 
{
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
 	}
 	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

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


function validState(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "Select one")
	{
		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 validateForm(theForm)
{
	// Customize these calls for your form

	// Start ------->
	if (!validRequired(theForm.name,"Name"))
		return false;

	if (!validEmail(theForm.email,"Email Address",true))
		return false;

	if (!validRequired(theForm.message,"Message"))
		return false;

	// <--------- End
	
	return true;
}

//Auto tab phone fields
var isNN = ( navigator.appName.indexOf( "Netscape" ) != -1 ); 
 
function autoTab( input,len, e ) { 
	var keyCode	= ( isNN ) ? e.which : e.keyCode; 
	var filter	= ( isNN ) ? [0,8,9] : [0,8,9,16,17,18,37,38,39,40,46]; 
	if( input.value.length >= len && !containsElement( filter, keyCode )) { 
	input.value = input.value.slice( 0, len ); 
	input.form[( getIndex( input ) + 1 ) % input.form.length].focus(); 
	} 
	return true; 
} 
 
function containsElement( arr, ele ) { 
	var found = false, index = 0; 
	while( !found && index < arr.length ) 
	if( arr[index] == ele ) { 
		found = true; 
	} else { 
		index++; 
	} 
	return found; 
} 
 
function getIndex( input ) { 
	var index = -1, i = 0, found = false; 
	while ( i < input.form.length && index == -1 ) 
	if ( input.form[i] == input ) { 
		index = i; 
	} else { 
		i++; 
	} 
	return index; 
}