//rollovers
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		leftnav_class_schedule_over = newImage("/images/leftnav_class-schedule_over.gif");
		leftnav_instructors_over = newImage("/images/leftnav_instructors_over.gif");
		leftnav_photo_gallery_over = newImage("/images/leftnav_photo-gallery_over.gif");
		leftnav_reg_info_over = newImage("/images/leftnav_reg-info_over.gif");
		leftnav_travel_lodging_over = newImage("/images/leftnav_travel-lodging_over.gif");
		leftnav_about_school_over = newImage("/images/leftnav_about-school_over.gif");
		leftnav_contact_over = newImage("/images/leftnav_contact_over.gif");
		leftnav_resources_over = newImage("/images/leftnav_resources_over.gif");
		leftnav_account_over = newImage("/images/leftnav_account_over.gif");
		leftnav_home_over = newImage("/images/leftnav_home_over.gif");
		preloadFlag = true;
	}
}

//form validation
function trimIt(TRIM_VALUE){
	RTrim(TRIM_VALUE);
	TRIM_VALUE = LTrim(TRIM_VALUE);
	
	return TRIM_VALUE;
}

function isEmail(string) {
    if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
        return true;
    else
        return false;
}
function isFieldEmpty(string) {
	if ((string != "") && (string != null)) // just check that it's not empty
        return true;
    else
        return false;
}   
function isFieldProper(string) {
    if (string.search(/^\w+( \w+)?$/) != -1) // check for illegal characters
        return true;
    else
        return false;
}       
function isFieldNumbers(string) {
    if (string.search(/^\d+( \d+)?$/) != -1) // check for only numbers
        return true;
    else
        return false;
} 
function isAcceptedCC(string) { // if card number is VISA or MASTERCARD ONLY
	//Mastercard: Must have a prefix of 51 to 55, and must be 16 digits in length. 
	//Visa: Must have a prefix of 4, and must be either 13 or 16 digits in length. 
	if ((string.length == 16) && ((string.substr(0,2) >= 51) && (string.substr(0,2) <= 55))){ //mastercard 
		//alert ('mc');
		return true; 
	}
	else if (((string.length == 13) || (string.length == 16)) && (string.substr(0,1) == 4)){ //visa 
		//alert ('visa');
		return true;
	}
	else{
		//alert ('cc not accepted');
		return false;
	}
}

function validate(page,form){
	//registration
	if (page == "account"){
	var listerrors = "";
		if (isFieldEmpty(form.fname.value) == false) {
			listerrors += "Please enter your first name.\n";
		}
		if (isFieldEmpty(form.lname.value) == false) {
	        listerrors += "Please enter your last name.\n";
	    }
		if (isFieldEmpty(form.address1.value) == false) {
			listerrors += "Please enter your address.\n";
		}
		if (isFieldEmpty(form.city.value) == false) {
			listerrors += "Please enter your city.\n";
		}
		if (form.state.value == "0"){
			listerrors += "Please select your state.\n";
		}
		if (isFieldEmpty(form.zip.value) == false) {
			listerrors += "Please enter your zip code.\n";
		}
		if ((isFieldEmpty(form.phone1.value) == false) || (isFieldEmpty(form.phone2.value) == false) || (isFieldEmpty(form.phone3.value) == false)) {
			listerrors += "Please enter your phone number.\n";
		}
		if (isEmail(form.email.value) == false) {
			listerrors += "Please enter your email address.\n";
		}
		else if (form.email.value != form.email2.value){
			listerrors += "Your email addresses do not match.\n";
		}
		if (isFieldEmpty(form.pass.value) == false) {
			listerrors += "Please enter a password.\n";
		}
		else if (form.pass.value != form.pass2.value){
			listerrors += "Your passwords do not match.\n";
		}
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
	else if (page == "account_edit"){
	var listerrors = "";
		if (isFieldEmpty(form.fname.value) == false) {
			listerrors += "Please enter your first name.\n";
		}
		if (isFieldEmpty(form.lname.value) == false) {
	        listerrors += "Please enter your last name.\n";
	    }
		if (isFieldEmpty(form.address1.value) == false) {
			listerrors += "Please enter your address.\n";
		}
		if (isFieldEmpty(form.city.value) == false) {
			listerrors += "Please enter your city.\n";
		}
		if (form.state.value == "0"){
			listerrors += "Please select your state.\n";
		}
		if (isFieldEmpty(form.zip.value) == false) {
			listerrors += "Please enter your zip code.\n";
		}
		if ((isFieldEmpty(form.phone1.value) == false) || (isFieldEmpty(form.phone2.value) == false) || (isFieldEmpty(form.phone3.value) == false)) {
			listerrors += "Please enter your phone number.\n";
		}
		if (isEmail(form.email.value) == false) {
			listerrors += "Please enter your email address.\n";
		}
		else if (form.email.value != form.email2.value){
			listerrors += "Your email addresses do not match.\n";
		}
		if (form.pass.value != form.pass2.value){
			listerrors += "Your passwords do not match.\n";
		}
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
	//newsletter
	else if (page == "newsletter"){
	var listerrors = "";
		if (isFieldEmpty(form.fname.value) == false) {
			listerrors += "Please enter your first name.\n";
		}
		if (isFieldEmpty(form.lname.value) == false) {
	        listerrors += "Please enter your last name.\n";
	    }
		if (isEmail(form.email.value) == false) {
			listerrors += "Please enter your email address.\n";
		}
		else if (form.email.value != form.email2.value){
			listerrors += "Your email addresses do not match.\n";
		}
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
	//cc info
	else if (page == "cc_info"){
	var listerrors = "";
		if (isFieldEmpty(form.card_number.value) == false) {
			listerrors += "Please enter your card number.\n";
		}
		else if (isFieldNumbers(form.card_number.value) == false) {
			listerrors += "Please enter a valid credit card number.\n";
		}
		else if (isAcceptedCC(form.card_number.value) == false) {
			listerrors += "Only VISA and MASTERCARD are accepted.\n";
		}
		if ((form.exp_month.value == "0") || (form.exp_year.value == "0")){
	        listerrors += "Please select the expiration date.\n";
	    }
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
	//forgot pw
	else if (page == "forgot_pw"){
	var listerrors = "";
		if (isEmail(form.email.value) == false) {
			listerrors += "Please enter your email address registered with WN Woodworks.\n";
		}
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
	//contact
	else if (page == "contact"){
	var listerrors = "";
		if (isFieldEmpty(form.name.value) == false) {
			listerrors += "Please enter your name.\n";
		}
		if (isEmail(form.email.value) == false) {
			listerrors += "Please enter your email address.\n";
		}
		if (isFieldEmpty(form.question.value) == false) {
	        listerrors += "Please enter your question/comment.\n";
	    }
		
	    if (listerrors != "")	{
			alert("The form cannot be submitted because of the following errors:\n\n" + listerrors);
			return false;
		} else	{
			return true;
		}
	}
}

//flash detect
var MM_contentVersion = 7;
var plugin = (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"]) ? navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
var FlashMode = "";

if ( plugin ) {
		var words = navigator.plugins["Shockwave Flash"].description.split(" ");
	    for (var i = 0; i < words.length; ++i)
	    {
		if (isNaN(parseInt(words[i])))
		continue;
		var MM_PluginVersion = words[i]; 
	    }
	var MM_FlashCanPlay = MM_PluginVersion >= MM_contentVersion;
}
else if (navigator.userAgent && navigator.userAgent.indexOf("MSIE")>=0 
   && (navigator.appVersion.indexOf("Win") != -1)) {
	document.write('<SCR' + 'IPT LANGUAGE=VBScript\> \n'); //FS hide this from IE4.5 Mac by splitting the tag
	document.write('on error resume next \n');
	document.write('MM_FlashCanPlay = ( IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash." & MM_contentVersion)))\n');
	document.write('</SCR' + 'IPT\> \n');
}
	
//cookie stuff
function setCookie(name, value, expires, path, domain, secure)
{
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}
	
if ( MM_FlashCanPlay ) { //I have flash!
	setCookie('has_flash', 'Y', '', '/');
} else { //I don't have flash...
	setCookie('has_flash', 'N', '', '/');
}

function getCookie(name)
{
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}