// date stuff used in cached pages
var dayofweek= new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
var dayofmonth= new Array("","1st","2nd","3rd","4th","5th","6th","7th","8th","9th","10th","11th","12th","13th","14th","15th","16th","17th","18th","19th","20th","21st","22nd","23rd","24th","25th","26th","27th","28th","29th","30th","31st");
var months= new Array("January","February","March","April","May","June","July","August","September","October","November","December");

// returns todays date as a formated string
function theDate(){
	var mydate=new Date();
	var year=mydate.getYear();
	if (year < 1000) year+=1900;
	var day=mydate.getDay();
	var month=mydate.getMonth();
	var daym=mydate.getDate();
	var todaysDate="  "+dayofweek[day]+" "+dayofmonth[daym]+" "+months[month]+" "+year;
	return todaysDate;
}

// Search box validation used for both the search box and the main search page
function searchpagevalidate(ref) {
	if (ref.keyword.value != '')
		{
		return true;
		}
	else
		{
		alert('Need a keyword to \nsearch on!');
		return false;
		}		
}
function gotoarticle(sel)
	{
		artID=sel.options[sel.selectedIndex].value;
		if (artID.length > 0){
			aURL="index.cfm?articleid="+artID;
			window.location.href = aURL;
		}
	}
	
//scripts used in the forum template
// check all fields have been entered.
function  _forum_checkThreadForm(_forum_this){
    if  (_forum_this.forum_topic.value.length ==0){
		alert("You must enter a Title.");
		return false;
	}
    if  (_forum_this.forum_username.value.length ==0){
		alert("You must enter your name to post to the forum.");
		return false;
	}
    if  (_forum_this.forum_body.value.length ==0){
		alert("In order to post you need to enter text into the message.");
		return false;
	}
	return true;
} 
//variables and functions used in the calendar template
var Days_in_Month = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
function monthchange(sel){
	mnth=sel.options[sel.selectedIndex].value;
	aform=sel.form;
	if(aform.aday != null){
		if (mnth =='2'){
			theYear=aform.ayear.options[aform.ayear.selectedIndex].value;
			Days_in_Month[1] = ((theYear % 400 == 0) || ((theYear % 4 == 0) && (theYear % 100 !=0))) ? 29 : 28;
		}
		for(i=27; i < Days_in_Month[mnth-1]; i++){
			aform.aday.options[i].text=i+1;
		}
		for(i=Days_in_Month[mnth-1]; i < 31; i++){
			aform.aday.options[i].text='';
		}
		checkday(aform);
	}
	changer(sel);	
}

function checkday(aform){
	if (aform.aday.options[aform.aday.selectedIndex].text==''){
		aform.aday.options[eval(Days_in_Month[aform.amonth.selectedIndex]-1)].selected=true;
		aform.aday.focus();
	}
}

function changer(sel)
{
	aform=sel.form;
	dy=(aform.aday != null)?aform.aday.options[aform.aday.selectedIndex].value:1;
	mnth=aform.amonth.options[aform.amonth.selectedIndex].value;
	yer=aform.ayear.options[aform.ayear.selectedIndex].value;
	aid=aform.articleid.value;
	aURL="index.cfm?articleid="+aid+"&ayear="+yer+"&amonth="+mnth+"&aday="+dy;
	window.location.href = aURL;
}

// automatic print function
// (C) 2000 www.CodeLifter.com
// http://www.codelifter.com
// Free for all users, but leave in this  header

function printWindow(){
   bV = parseInt(navigator.appVersion);
   if (bV >= 4) window.print();
}


// Set-up external links for XHTML where the target attribute has been deprecated
function externalLinks() { 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i < anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
			anchor.target = "_blank"; 
	}
	var forms = document.getElementsByTagName("form");
	for (var j=0; j <forms.length; j++) {
		var form = forms[j];
		if (form.getAttribute("id") != null && form.getAttribute("id").indexOf("pollform") == 0)
			form.target = "_blank";
	}
}


// ARTICLE RATINGS FUNCTIONS
var ratings = new Array();
var bugged = 0;

function showStars( articleid, rating ) {
	bugged = 1;
	for ( i = 1;  i < 6; i++ ) {
		img = document.getElementById('star_'+articleid+'_'+i);
		if (img) {
			bugged = 0;
			if ( i <= rating ) {
					img.src = "./images/stars/full_star.gif";
			}else{
					img.src = "./images/stars/blank_star.gif";
			}
		}
	}
}

function SetRate( intArticleId, intRating ) {
	//showStars( product_id, rating, 1 );
	if ( bugged ) {
		return true;     // should just follow link
	}
	DWREngine._execute(_cfscriptLocation, null, 'SetArticleRate', intArticleId, intRating, GetRating);
	ratings[intArticleId] = intRating;
	return false;    // tells onClick not to follow link
}

function GetRating( intArticleId ){
	if (intArticleId > 0) {
		DWREngine._execute(_cfscriptLocation, null, 'GetArticleRate', intArticleId, UpdateRating);
	}else if (intArticleId < 0){
		alert('Sorry your vote has already been counted please try again tomorrow');
	}
}

function UpdateRating( arrRatings ){
	if (arrRatings.length == 6){
		starImage = document.getElementById('stars');
		if (starImage != null)
			starImage.src = './images/stars/stars' + Math.round((arrRatings[0]/2)/5,0)*5 + '.gif';
		totalVotes = parseInt(arrRatings[1],10)+parseInt(arrRatings[2],10)+parseInt(arrRatings[3],10)+parseInt(arrRatings[4],10)+parseInt(arrRatings[5],10);
		for( i = 1; i < 6; i++){
			barImage = document.getElementById('star'+i);
			if (barImage != null)
				barImage.height = Math.round((arrRatings[i]/totalVotes)*50);
		}
		document.getElementById('ratings').innerHTML = totalVotes + ' votes so far';
	}
}

function GetStar( intArticleId ){
	if (intArticleId > 0) {
		DWREngine._execute(_cfscriptLocation, null, 'GetArticleStar', intArticleId, UpdateStar);
	}
}

function UpdateStar( arrArticle ){
	if (arrArticle.length == 2){
		starImage = document.getElementById('stars'+arrArticle[0]);
		if (starImage != null){
			starImage.src = './images/stars/stars' + Math.round((arrArticle[1]/2)/5,0)*5 + '.gif';
		}
	}
}

function SetRemove( intArticleId, intRating ) {
	//showStars( product_id, rating, 1 );
	if ( bugged ) {
		return true;     // should just follow link
	}
	DWREngine._execute(_cfscriptLocation, null, 'SetArticleRemove', intArticleId, intRating, GetRemove);
	return false;    // tells onClick not to follow link
}

function GetRemove( strResponse ){
	if (strResponse != "") {
		alert(strResponse);
	}
}

//Functions Used by the commerce templates
function checkNum(id){	<!--- Check that the quantity is a positive integer --->
	var checkstr = /^[1-9][0-9]*$/;
	if  ( checkstr.test(id.value) ){ 
		id.value = id.value;	
	}else{
		alert ('You must specify a valid quantity');	
		id.value = 1;
	}
}

function showProductStatus(f,itemAttribs,ProductStatus){<!--- Search the stock array for  an itemAttribs and get it's price/availability info to the form --->
	qty = f.Quantity.value;
	if( (qty == '') || (isNaN(parseInt(qty))) ){
		qty = 0;  
	}else{
		qty = parseInt(qty);
		if (isNaN(qty)){
			qty = 1;
		}else if (qty < 0){
			qty = 0-qty;
		}
		f.Quantity.value = qty;
	}
	selectAttribs=""; <!--- Variable to hold Attributes selected by the user in a CSV string --->
	for(i = 0; i < f.length; i++)<!--- Scan the form and get product ProductStatus into PID --->
	{
		e = f.elements[i];
		if(e.name !=null && e.name.substr(0,7) == "Attrib_"){<!--- Get the selection from the form's DROP DOWN lists --->
			if(e.type == "select-one") selectAttribs=selectAttribs+e.options[e.selectedIndex].value+",";
			if(e.type == "hidden") selectAttribs=selectAttribs+e.value+",";
		}
	}
	selectAttribs = selectAttribs.substr(0,selectAttribs.length-1); 		<!--- Loose that final comma! --->
	for(i = 1; i < itemAttribs.length-1; i++){ 	<!--- Search the itemAttribs array for the Selected Attributes --->
		if(itemAttribs[i] == selectAttribs){break;}
	}<!--- If we get to here without a 'break' it's Out of Stock in that config. --->
	<!--- Put the details on to the form display ---> 
	if(ProductStatus[i].STK == 0 || ProductStatus[i].STK == -1){
		Avail = 'Unavailable';
	}else{
		Avail = ProductStatus[i].STK ;
	}
	f.Availability.value = Avail;
	if (Avail != 'Unavailable'){
		// the following may or may not exist
		if (f.PriceIncVAT != null)f.PriceIncVAT.value = formatNum(ProductStatus[i].PRCinc);
		if (f.PriceExVAT != null)f.PriceExVAT.value = formatNum(ProductStatus[i].PRCex);
		if (f.VAT != null)f.VAT.value = formatNum(ProductStatus[i].VAT);
		if (f.TotalIncVAT != null)f.TotalIncVAT.value = formatNum(f.PriceIncVAT.value * qty);
		//these always exist
		f.Code.value = ProductStatus[i].CID;
		f.ProductOptionID.value = ProductStatus[i].PID;
	}else{
		// the following may or may not exist
		if (f.PriceIncVAT != null)f.PriceIncVAT.value = "N/A";
		if (f.PriceExVAT != null)f.PriceExVAT.value = "N/A";
		if (f.VAT != null)f.VAT.value = "N/A";
		if (f.TotalIncVAT != null)f.TotalIncVAT.value = "N/A";
		//these always exist
		f.Code.value = "N/A"; 
		f.ProductOptionID.value = "N/A";
	}
} 	

function checkAvail(f){
	if(f.Availability.value == "" || f.Availability.value == "Unavailable"){
		alert("   Sorry, this item is not\navailable with the options\n    you have selected.");
		return false;
	}else{
		return true;
	}
}

function formatNum(value){
	value = "" + value <!--- convert value to string --->
	precision = 2; <!--- Decimal places --->
	width = 13; <!--- Formatted width in characters --->
	padding = "";
	for(p=0;p<width;p++) padding+=" "; <!--- Make a padding string --->      
	var whole = "" + Math.round(value * Math.pow(10, precision));
	var decPoint = whole.length - precision;
	if(decPoint != 0){
		result = whole.substring(0, decPoint);
		result += ".";
		result += whole.substring(decPoint, whole.length);
	}else{
		result = whole;
	}
	result = padding+result;<!--- Left pad numbers so they line up --->
	result = result.substring(result.length-width, result.length);		   
	return result;
}
//Functions Used by the commerce templates end

// Custom send mail function
function sendMailTo (address, domain)
{
	location.href = "mailto:"+address+"@"+domain;
}