/**************************************/
/*
Lloyd Engineering Ltd.
CopyrightŠUnite and Rule Ltd.
*/
/**************************************/

/**************************************/
/* Swap the active CSS */
function setActiveStyleSheet(title) {
	if (document.getElementsByTagName) {
		for (i=0; (a = document.getElementsByTagName("link")[i]); i++) {
			if (a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) a.disabled = true;
			if (a.getAttribute("title") == title) a.disabled = false;
		}
	}
}

/**************************************/
/* Popup */
function popup (obj, iW, iH) {
	var winW = iW;
	var winH = iH;
	var winName = '_blank';
	var winL = (screen.width - winW) / 2;
	var winT = ((screen.height - winH) / 2) - 50;
	window.open(obj.href, winName, 'location=no, toolbar=no, status=no, directories=no, scrollbars=yes, menubar=no, resizable=no, left=' + winL + ', top=' + winT +', width=' + winW + ', height=' + winH);
}

/**************************************/
/* Turn off a menu */
function offMenu (obj) {
	document.getElementById(obj + 'Arrows').style.display = 'block';
	document.getElementById(obj).style.display = 'none';
}

/**************************************/
/* Change Menu */
function swapMenu (obj) {
	//check if hidden and show or opposite
	if (document.getElementById(obj).style.display == 'block') {
		document.getElementById(obj + 'Arrows').style.display = 'block';
		document.getElementById(obj).style.display = 'none';
	} else {
		document.getElementById(obj + 'Arrows').style.display = 'none';
		document.getElementById(obj).style.display = 'block';
	}
}

//turn given menu off
function offMenuNorm (obj) {
	document.getElementById(obj).style.display = 'none';
}

//swap a menu
function swapMenuNorm (obj) {
	//check if hidden and show or opposite
	if (document.getElementById(obj).style.display == 'block') {
		document.getElementById(obj).style.display = 'none';
	} else {
		document.getElementById(obj).style.display = 'block';
	}
}

/**************************************/
/* New Course Validation */
function validateNewCourse(oForm) {
	var bValid = true;

	//check normal form
	if (oForm.courseTitle.value == '' ||
		oForm.strapline.value == '' ||
		oForm.details.value == '' || 
		oForm.cost.value == '') {
		bValid = false;
	}

	//check business category
	if (oForm.disciplineID.options[oForm.disciplineID.selectedIndex].text == 'Please Select') {
		alert('Please select a discipline for your course.');
		return false;
	}

	//return correctly
	if (bValid == false) {
		alert('Please fill out all fields');
		return false;
	}

	return true;
}

/**************************************/
/* Member Profile Validation */
function validateMemberProfile(oForm) {
	var bValid = true;

	//check normal form
	if (oForm.name.value == '' ||
		oForm.telephone.value == '' ||
		oForm.address1.value == '' || 
		oForm.postcode.value == '' || 
		oForm.profile.value == '' || 
		oForm.profileTitle.value == '') {
		bValid = false;
	}

	//return correctly
	if (bValid == false) {
		alert('Please fill out all fields');
		return false;
	}

	return true;
}

/**************************************/
/* Contact Validation */
function validateContact(oForm) {
	var bValid = true;
/*
	//check for security code
	if (oForm.code.value.length < 4) {
		alert('Please enter the security code');
		return false;
	}
*/

	//check normal form
	if (oForm.contactName.value == '' ||
		oForm.businessName.value == '' ||
		oForm.address1.value == '' || 
		oForm.postcode.value == '' || 
		oForm.country.value == '' || 
		oForm.telephone.value == '' ||
		oForm.website.value == '') {
		bValid = false;
	}

	//check email
	if (validateEmail(oForm.email) == false) {
		alert('Please enter a valid email address');
		return false;
	}
	if (oForm.email.value != oForm.emailConfirm.value) {
		alert('Your email address and confirmation do not match');
		return false;
	}

	//check for registration and password
	if (oForm.password.value.length < 5) {
		alert('Your password must be 5 or more characters');
		return false;
	}
	if (oForm.password.value != oForm.passwordConfirm.value) {
		alert('Your password and confirmation do not match');
		return false;
	}

	//return correctly
	if (bValid == false) {
		alert('Please fill out all fields');
		return false;
	}

	return true;
}

/**************************************/
/* Password reset Validation */
function validateLogin(oForm) {
	var bValid = true;

	//check normal form
	if (oForm.currentPassword.value == '') {
		alert('Please enter your current password');
		return false;
	}

	//check email
	if (validateEmail(oForm.email) == false) {
		alert('Please enter a valid email address');
		return false;
	}

	//check for new password
	if (oForm.newPassword.value.length < 5) {
		alert('Your new password must be 5 or more characters');
		return false;
	}
	if (oForm.newPassword.value != oForm.confirmPassword.value) {
		alert('Your password and confirmation do not match');
		return false;
	}

	return true;
}

/**************************************/
/* validate the email field */
function validateEmail(field) {
	with (field) {
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) { return false; }
		else { return true; }
	}
}

/**************************************/
/* validate the date */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=2010;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : dd/mm/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		return false
	}
return true
}