/* ===========================================================================

   validate.js	Form validation code for Relationshop Web Site	 jB  F 042905 

    Source:  Copyright (c) 2005-2007  J. E. Brown  all rights reserved  
=========================================================================== */

function validate_you_must_answer(element, blankname) 
{
	alert('You must answer the "' + blankname + '" question.'); 
//	location = '#' + element.name; 
	return false 
}

function validate_text(element, blankname) 
{ 
	if (element.value == "") 
		return validate_you_must_answer(element, blankname) 
	else 
		return true 
}

function validate_button(element, blankname) 
{ 
//	for (var i in element) // Doesn't work in Netscape 7 & possibly MSIE 6.0. 
	for (var i = 0; i < element.length; ++ i) 
		if (element[i].checked) 
			return true 

	return validate_you_must_answer(element[0], blankname) 
}

function validate_bool(is_true, element, blankname) 
{ 
	if (!is_true) 
		return validate_you_must_answer(element, blankname) 
	else 
		return true 
}

// 112208 

function validate_email_address(element, blankname) 
{ 
	if (!validate_text(element, blankname)) 
		return false 
	else 
		return if_true_else_alert(/^[\w\-\.]+@[A-Za-z0-9][\w\-]*\.[\w\.\-]*[A-Za-z]$/.test(element.value), '"' + element.value + '" is an invalid e-mail address.') 
}

// 041510 

function validate_email_addresses(element1, element2, blankname) 
{ 
	return	validate_email_address(element1,              blankname) 
		 && validate_email_address(element2, 're-type ' + blankname) 
		 &&	if_true_else_alert(element1.value == element2.value, blankname + 'es must match.') 
}

// 021207
// if_true_else_alert(): Convenience function. Shortens callers dramatically. 
// Intended usage: return if_true_else_alert(x == y, "x and y do not match") 
// Use without "if," when return is unconditional. 

function if_true_else_alert(condition, false_message) 
{
	if (condition) 
		return true 
	else 
		{
		alert(false_message); 
		return false 
		}
}

// 021207
// false_then_alert(): Convenience function. Shortens callers dramatically. 
// Intended usage: if (false_then_alert(x == y, "x and y do not match")) 
//						return false 
// Use after "if," when return is conditional. 

function false_then_alert(condition, false_message) 
{
	if (!condition) 
		alert(false_message); 
	
	return !condition // caller will check this and return iff true 
}

// Validation routines for HMS / DMS input. 

// 021207 

function validate_number_in_range(element, blankname, min, max, may_be_blank) 
{ 
	if (element.value == "") 
		return if_true_else_alert(may_be_blank, 'You must type a number in the "' + blankname + '" field.'); 
	
	var re = /^-?\d+$/ ; // numerals, optionally preceded by '-' 
	if (false_then_alert(re.test(element.value), 'The "' + blankname + '" field must be a whole number.\nRequired characters are 0-9.\nAn optional minus sign is allowed.\nNo other characters are allowed.')) 
		return false; 
	
	var	i = parseInt(element.value, 10);
	
	// See if is in range: 
	return if_true_else_alert(i >= min && i <= max, 'The "' + blankname + '" field must be between ' + min + ' and ' + max + '.'); 
}

// 021207 

function validate_parse_DMS(D, M, S) 
{
	var total = parseInt(D.value, 10); 
	var sign  = ( D.value.substr(0, 1) != '-' ? 1 : -1 ); 
//	var sign  = ( D.value.[0] != '-' ? 1 : -1 ); // fails IE5 
	
	if (M.value != "") 
		{
		total += sign * parseInt(M.value, 10) / 60; 
		
		if (S.value != "") 
			total += sign * parseInt(S.value, 10) / 3600; 
		}
	
	return total 
}

// Alert and return false iff the DMS total is even one second out of range. 
// 021207
// Assumes: the D, M, S fields have already been proved numeric or blank. 

function validate_hms_total_in_range(D, M, S, units, Dmin, Dmax) 
{ 
	var total = validate_parse_DMS(D, M, S); 

	return if_true_else_alert(Dmin <= total && total <= Dmax, 'The ' + units + ' total (' + total + ') \nis not in the range ' + Dmin + ' to ' + Dmax + '.'); 
}

// 021207 

function validate_hms_in_range(D, M, S, units, Dmin, Dmax, M_S_blanks_ok) 
{ 
	return (   1
			&& validate_number_in_range(D,     units, Dmin, Dmax, false        ) 
			&& validate_number_in_range(M, "minutes",    0,   59, M_S_blanks_ok) 
			&& validate_number_in_range(S, "seconds",    0,   59, M_S_blanks_ok) 
			&& validate_hms_total_in_range(D, M, S, units, Dmin, Dmax) 
		   ) 
}

// 112807 

var forms_are_working = true; 

// 120507 

function validate_forms_are_working() 
{
//	return if_true_else_alert(forms_are_working, "As explained at the top of this page, forms are not working today, due to the quality problems at America Online."); 
	return if_true_else_alert(forms_are_working, "As explained at the top of this page, forms are not working today."); 
}

// 051207 

function write_form_status_message() 
{
	if (!forms_are_working) 
		{
		if (false) // false as of 051307 
			document.writeln("<P Style='background-color: white; color: rgb(128,0,0); padding: 1em; font-size: 200%;'>NEWS FLASH: Forms are not working today. On May 11, the company that processes our forms, wwwtoolz.com, suddenly abandoned its customers and went offline. We're looking for a more reliable provider. <BR>Please bookmark this page and try again tomorrow."); 
		if (false) // true as of 101407, 102507 
			document.writeln("<P Style='background-color: white; color: rgb(128,0,0); padding: 1em; font-size: 200%;'>NEWS FLASH: Due to AOL's incompetence, forms are not working today. <BR>Please do not fill in the form or press Submit; <BR>if you do, your data will disappear off the face of the Earth. <BR>We're looking for a more reliable Internet provider. <BR>Please bookmark this page and try again in 2 days, and remember, <BR> <B>AOL Sucks</B>."); 
		if (false) // true as of 120507 
			document.writeln("<P Style='background-color: white; color: rgb(128,0,0); padding: 1em; font-size: 200%;'>NEWS FLASH: Due to AOL's incompetence, forms are not working. <BR>Please do not fill in the form or press Submit; <BR>if you do, your data will disappear off the face of the Earth. <BR>We're looking for a more reliable Internet provider. <BR><B>AOL Sucks</B>."); 
		if (true) // true as of 100708 
			document.writeln("<P Style='background-color: white; color: rgb(128,0,0); padding: 1em; font-size: 200%;'>NEWS FLASH: We just moved the entire website, and forms are not working yet. <BR>Please do not fill in the form or press Submit; <BR>if you do, your data will disappear off the face of the Earth. <BR>Please try again in a few days."); 
		}
}

// 051810. For Decision 051910-F. 

function write_form_rcvd_thanks_message() 
{
	document.writeln("<P><B>Attention Gmail Users:</B> If you don't receive a reply in 2-3 days, remember to check your Spam folder. <BR> Due to hyperactive spam filters at Gmail, letters from new contacts sometimes get blocked."); 
}

// jB  W 112807, 120507 

function how_to_submit_plan_b(
	verb, 		// "apply", "submit your data", etc. 
	subj, 
	emailaddr ) 
{
	if (!forms_are_working) 
		document.writeln("<P Style='background-color: white; color: rgb(128,0,0); padding: 1em; font-size: 200%;'>Forms are not working today. You will need to " + verb + " by e-mail. <BR>To " + verb + ", copy this entire page (text only) and paste it into an e-mail, <BR>and then type your answers into the same e-mail. <BR>Please use the subject line \"" + subj + "\". <BR>Send the finished e-mail to: " + emailaddr + " "); 
}

/* ======================================================================== */