var pageReady = false
var n
var deliverySupplement = 0

function checkifReady() {
	if ((document.forms) && (document.images)) {
		pageReady = true
	}
	else {
		i=i+1
		if ( i<10 ) { setTimeout("checkifReady()",1000) }
	}
}

function Titlise(Sentence) {	// converts 1st character of the words in a sentence to upper case

	var spPos=0
	var size = Sentence.length
	Sentence=Sentence.toLowerCase()

	if (size>0) {
		while (Sentence.slice(0,1)==" ") {			//Strip leading spaces
			Sentence = Sentence.substr(1,size-1)
			size = Sentence.length
		}  
		while(Sentence.slice(size-1,size)==" ") {	// Strip trailing spaces
			Sentence = Sentence.substr(0,size-1)
			size = Sentence.length
		}

		if (Sentence.indexOf(" ",spPos)==-1) {							// only one word in sentence
			Sentence=Sentence.charAt(0).toUpperCase()+Sentence.slice(1,size)
		}
		else {
			while ( spPos!=-1) {
				spPos = Sentence.indexOf(" ",spPos+1)
				Sentence=Sentence.slice(0,spPos+1)+Sentence.charAt(spPos+1).toUpperCase()+Sentence.slice(spPos+2,size)
			} // end while
		} // end else
	} // end if (size>0)
	return Sentence
} // end function

function isTelephone(v) {
	var nGoodChars = 0
	var nPoints = 0
	var len = v.length
	var goodChar = new Array(" ","0","1","2","3","4","5","6","7","8","9","+")


	for (var i = 0;i<len;i++) {						// loop through each character in input string
		if (i>0) {									// seach string for "+" characters
			if( v.charAt(i) == goodChar[11]) {
			  	return false						// plus  only in 1st position
			}
		}
	}

	for (var i = 0;i<len;i++) {						// loop through each character in input string
		for (var j = 0;j<12;j++) {					// loop though good character
			if( v.charAt(i) == goodChar[j]) {		// found numeral or space
				nGoodChars = nGoodChars + 1			// count good characters
			}
		}
	}

	if (nGoodChars<len) {
		return false
	}

	return true
}

function findHTML(phrase) {
	if (phrase.indexOf("<",0) > -1) { 
		return true
	}
	if (phrase.indexOf(">",0) > -1) {
		 return true
	}
	if (phrase.indexOf("&#60;",0) > -1) {
		return true
	}	
	if (phrase.indexOf("&#62;",0) > -1) {
		return true
	}	
	if (phrase.indexOf("&lt;",0) > -1) {
		return true
	}
	if (phrase.indexOf("&gt;",0) > -1) {
		return true
	}
	return false
}

function Trim(phrase) {	// Strips leading and trailing spaces
	var Sp=" "
	var size = phrase.length
	while (phrase.slice(0,1)==Sp) {					// Strip leading spaces
		phrase = phrase.substr(1,size-1)
		size = phrase.length
	}  
	while(phrase.slice(size-1,size)==Sp) {			// Strip trailing spaces
		phrase = phrase.substr(0,size-1)
		size = phrase.length
	}
	return phrase
}

function validPC() {
	var pCode = document.requestForm.PC

	if (pCode.value == "") {						// post code is a required field
		alert('Please enter your post code. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
		pCode.focus()
		return false
	}

	pCode.value = pCode.value.toUpperCase()			// convert to uppercase
	pCode.value = Trim(pCode.value)					// write back to form field
	var size=pCode.value.length

	var validPCs = new Array(
		"AB","AL","B","BA","BB","BD","BH","BL","BN","BR","BS","BT","CA","CB",
		"CF","CH","CM","CO","CR","CT","CV","CW","DA","DD","DE","DG","DH",
		"DL","DN","DT","DY","E","EC","EH","EN","EX","FK","FY","G","GL","GU",
		"GY","HA","HD","HG","HP","HR","HS","HU","HX","IG","IM","IP","IV","JE",
		"KA","KT","KW","KY","L","LA","LD","LE","LL","LN","LS","LU","M","ME",
		"MK","ML","N","NE","NG","NN","NP","NR","NW","OL","OX","PA","PE","PH",
		"PL","PO","PR","RG","RH","RM","S","SA","SE","SG","SK","SL","SM","SN",
		"SO","SP","SR","SS","ST","SW","SY","TA","TD","TF","TN","TQ","TR","TS",
		"TW","UB","W","WA","WC","WD","WF","WN","WR","WS","WV","YO","ZE","EU","NO")

	var prefix = pCode.value.substr(0,2)			// aquire prefix

	var NBad = 0
	for (var i = 0;i<validPCs.length;i++) {			// count number of mismatches
		if ( prefix != validPCs[i] ) NBad = NBad + 1
	}
	if (NBad == validPCs.length) {
		alert('Invalid post code: \rWrong Prefix: '+prefix+' \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 		pCode.value=""
  		pCode.focus()
		return false
	}

	if ( (pCode.value!="EU") && (pCode.value!="NO") ) {	// allowable prefix

 		if (size < 6 || size > 8) {
			alert('Invalid post code: \rcode is the wrong length. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		if (!(isNaN(pCode.value.charAt(0)))) {				// leftmost character must be a letter
			alert('Invalid post code: \rcode cannot start with a number. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		if (isNaN(pCode.value.charAt(size-3))) {				// first character of inward code must be a number
			alert('Invalid post code: \r2nd part of the post code must start with a number. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		if (!(isNaN(pCode.value.charAt(size-2)))) {			// second character of inward code must be a letter
			alert('Invalid post code: \r2nd part of the post code must start with a number followed by two letters. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		if (!(isNaN(pCode.value.charAt(size-1)))) {			// third character of inward code must be a letter
			alert('Invalid post code: \r2nd part of the post code must start with a number followed by two letters. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		if (!(pCode.value.charAt(size-4) == " "))	{		// space in position length-3 rule
			alert('Invalid post code: \rcode has no space, or space is in the wrong position. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
		var count1 = pCode.value.indexOf(" ")
		var count2 = pCode.value.lastIndexOf(" ")
		if (count1 != count2) {							//only one space rule
			alert('Invalid post code: \rcode must have only one space between the 1st and 2nd parts. \rFor Non-UK orders enter "EU" or"Non-EU" as appropriate')
 			pCode.value=""
  			pCode.focus()
			return false
		}
	}
	
	return true											// postcode OK
}


function checkRequest() {

	var name	= document.requestForm.N
	var email	= document.requestForm.E
	var add1	= document.requestForm.A1
	var add2	= document.requestForm.A2
	var add3	= document.requestForm.A3
	var add4	= document.requestForm.A4
	var pc		= document.requestForm.PC
	var tel		= document.requestForm.T
	var req		= document.requestForm.R
	

	var size
	
	if (name.value == "") {
		alert("Please enter your name")
		name.focus()
		return false
	}
	if (findHTML(name.value)) {
		alert("Markup not Permitted")
		name.value = ""
		name.focus()
		return false
	}
	name.value=Titlise(name.value)

	var em=email.value.toLowerCase()
	em=Trim(em)
	if (em == "") {
		alert("Please enter your email address")
		email.focus()
		return  false
	}
	var apos = "'"
	var badChars = new Array("/",";",":",",","<",">","&")

	for (var i = 0;i<badChars.length;i++) {
		if( em.indexOf(badChars[i],0) > -1) {
			alert("Invalid email address:\rBad character: "+badChars[i])
			email.focus()
			email.value=""
			return  false
		}
	}

	var atPos = em.indexOf("@",1)
	if (atPos == -1) {
		alert("Invalid email address:\rMissing "+apos+"at"+apos+" character: "+apos+"@"+apos)
		email.focus()
		email.value=""
		return  false
	}

	if (em.indexOf("@",atPos+1) > -1) {
		alert("Invalid email address:\rMore than one @ character")
			email.focus()
			email.value=""
			return  false
	}

	dotPos = em.indexOf(".",atPos)
	if (dotPos == -1) {
		alert("Invalid email address:\rMissing period: "+apos+"."+apos)
			email.focus()
			email.value=""
			return  false
	}

	if (dotPos+3 > em.length ) {
		alert("Invalid email address:\rThere should be at least 2 characters after the period: "+apos+"."+apos)
			email.focus()
			email.value=""
			return  false
	}

	var i = 1	// work backwards to focus on 1st missing entry
	if (add4.value != "") { i=i+1; add4.value=Titlise(add4.value) } else { add4.focus() }
	if (add3.value != "") { i=i+1; add3.value=Titlise(add3.value) } else { add3.focus() }
	if (add2.value != "") { i=i+1; add2.value=Titlise(add2.value) } else { add2.focus() }
	if (add1.value != "") { i=i+1; add1.value=Titlise(add1.value) } else { add1.focus() }
	if (i<3) { 
		alert("Please enter your full address")
		return false
	}
	
	if (!validPC()) { return false }

	if (tel.value == "") {
		alert("Please enter your contact number")
		tel.focus()
		return false
	}

	if (!isTelephone(tel.value)) {
		alert("Not a telephone number")
		tel.value = ""
		tel.focus()
		return false
	}

	if (findHTML(tel.value)) {
		alert("Markup not Permitted")
		tel.value = ""
		tel.focus()
		return false
	}

	var msg=Trim(req.value)
	size = msg.length
	if (size>0) {
		if (findHTML(msg)) {
			alert("Markup not Permitted")
			req.value = ""
			return false
		}
		msg=msg.charAt(0).toUpperCase()+msg.slice(1,size)		// Capitalise 1st word
		if (msg.charAt(size) != ".") { msg=msg+"."}				// Add full stop
		req.value=msg
	}
	else {
		alert("Please enter your message")
		req.focus()
		return  false
	}
	
	document.requestForm.action = TEAdecrypt(")i‡«·#½
çè5")			// Decryption function in tea_de.js

	return true	// Form OK
}