function checkSuccess() {
	var URL = document.URL;
	var URLlength = URL.length;
	var last_char = URL.charAt(URLlength-1);
	if (last_char == '1') {
		document.getElementById('show').innerHTML = "Order processed successfully!";
	}
	else if (last_char == '0') {
		document.getElementById('show').innerHTML = 'There was a problem with your order - please try again!';
	}
	else if (last_char == '2') {
		document.getElementById('show').innerHTML = 'Your order could not be sent - Please use a valid email address!';
		alert("Please use a valid email address!");
	}
}

function checkValidation(formInput) {

    if (typeof(formInput) != "object") {
        alert("Validation not supported on this browser.");
        return(false);
    }

    var message;

    if (stringEmpty(formInput.value)) {
        message = "Please enter an email address!";
        alert(message);
    } else if (noAtSign( formInput.value )) {
        message = "Error! The address \"" + formInput.value + "\" does not contain an '@' character.";
        alert(message);
    } else if (nothingBeforeAt(formInput.value)) {
        message = "Error! The address \"" + formInput.value;
        message += "\" must contain at least one character before the '@' character";
        alert(message);
    } else if (noLeftBracket(formInput.value)) {
        message = "Error! The address \"" + formInput.value;
        message += "\" contains a right square bracket ']',\nbut no corresponding left square bracket '['.";
        alert(message);
    } else if (noRightBracket(formInput.value)) {
        message = "Error! The address \"" + formInput.value;
        message += "\" contains a left square bracket '[',\nbut no corresponding right square bracket ']'.";
        alert( message);
    } else if (noValidPeriod(formInput.value)) {
        message = "Error! The address \"" + formInput.value + "\" must contain a period ('.') character.";
        alert(message);
    } else if (noValidSuffix(formInput.value)) {
        message = "Error! The address \"" + formInput.value;
        message += "\" must contain a two, three or four character suffix.";
        alert(message);
    } else {
        message = "Success! The email address \"" + formInput.value + "\" validates OK.";
		formsubmit();
        //alert(message);		
	}

    var objType = typeof(formInput.focus);
    if (objType == "object" || objType == "function") {
         formInput.focus();
    }

    return (true);
}

function checkValid (formField) {
    if ( checkValidation ( formField ) == true ) {
        alert ( 'E-Mail Address Validates OK' );

    }

    return ( false );
}

function stringEmpty (formField) {
    // CHECK THAT THE STRING IS NOT EMPTY
    if ( formField.length < 1 ) {
        return ( true );
    } else {
        return ( false );
    }
}

function noAtSign (formField) {
    // CHECK THAT THERE IS AN '@' CHARACTER IN THE STRING
    if (formField.indexOf ('@', 0) == -1) {
        return ( true )
    } else {
        return ( false );
    }
}

function nothingBeforeAt (formField) {
    // CHECK THERE IS AT LEAST ONE CHARACTER BEFORE THE '@' CHARACTER
    if ( formField.indexOf ( '@', 0 ) < 1 ) {
        return ( true )
    } else {
        return ( false );
    }
}

function noLeftBracket (formField) {
    // IF EMAIL ADDRESS IN FORM 'user@[255,255,255,0]', THEN CHECK FOR LEFT BRACKET
    if ( formField.indexOf ( '[', 0 ) == -1 && formField.charAt (formField.length - 1) == ']') {
        return ( true )
    } else {
        return ( false );
    }
}

function noRightBracket (formField) {
    // IF EMAIL ADDRESS IN FORM 'user@[255,255,255,0]', THEN CHECK FOR RIGHT BRACKET
    if (formField.indexOf ( '[', 0 ) > -1 && formField.charAt (formField.length - 1) != ']') {
        return ( true );
    } else {
        return ( false );
    }
}

function noValidPeriod (formField) {
    // IF EMAIL ADDRESS IN FORM 'user@[255,255,255,0]', THEN WE ARE NOT INTERESTED
    if (formField.indexOf ( '@', 0 ) > 1 && formField.charAt (formField.length - 1 ) == ']')
        return ( false );

    // CHECK THAT THERE IS AT LEAST ONE PERIOD IN THE STRING
    if (formField.indexOf ( '.', 0 ) == -1)
        return ( true );

    return ( false );
}

function noValidSuffix(formField) {
    // IF EMAIL ADDRESS IN FORM 'user@[255,255,255,0]', THEN WE ARE NOT INTERESTED
    if (formField.indexOf('@', 0) > 1 && formField.charAt(formField.length - 1) == ']') {
        return ( false );
    }

    // CHECK THAT THERE IS A TWO OR THREE CHARACTER SUFFIX AFTER THE LAST PERIOD
    var len = formField.length;
    var pos = formField.lastIndexOf ( '.', len - 1 ) + 1;
    if ( ( len - pos ) < 2 || ( len - pos ) > 4 ) {
        return ( true );
    } else {
        return ( false );
    }
}