// date stuff used in cached pages
dayofweek= new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
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");
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();
	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.jsp?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;
} 

// 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()
}

//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