/*
Security Scripts
*/
function login_check()
{
	/*
		Check Requirements for the Login Page
		User ID Must Not be Null
		Password Must Not be Null
	*/
	if (document.frmRequest.userid.value == '0'||document.frmRequest.userid.value == ''||document.frmRequest.userid.Length==0)
	{
		alert('You Must Enter a Username');
		return false;
	}
	if (document.frmRequest.password.value == '0'||document.frmRequest.password.value == ''||document.frmRequest.password.Length==0)
	{
		alert("You must enter a Password");
		return false;
	}
	document.frmRequest.submit();
}
function Logout(folder) {
    window.location = folder + "logout.asp"
}
/*
    User Management Scripts
*/
function AdminViewWebinars(userid) {
    document.frmRequest.userid.value = 'get'+userid;
    document.frmRequest.action = "managewebinars.asp";
    document.frmRequest.submit();
}

function EditUser(userid) {
    document.frmRequest.userid.value = userid;
    document.frmRequest.submit();
}
function user_edit_check() {
    /*
    Check Requirements for Adding/Editing a User
    User ID Must Not be Null
    User ID must be a a valid email address
    Password Must Not be Null
    */
    if (document.frmRequest.userid.value == '0' || document.frmRequest.userid.value == '' || document.frmRequest.userid.value.length == 0) {
        alert('You Must Enter a User ID');
        return false;
    }
    if (echeck(document.frmRequest.userid.value) == false) {
            return false;
    }
    if (document.frmRequest.password.value == '0' || document.frmRequest.password.value == '' || document.frmRequest.password.value.length == 0) {
        alert('You must enter a Password');
        return false;
    }
    var ans = confirm("Edit this account?");
    if (ans) {
    document.frmRequest.password.readOnly = false;
    document.frmRequest.submit();
    }
    else {
	return false;
    }
}

function DeleteUser(userid, username) {
    var ans = confirm("Delete " + username + "!!" + "\n\nThis Cannot be undone!");
    if (ans) {
        alert(username + " will be deleted");
        document.frmRequest.userid.value = userid;
        document.frmRequest.action = "deletemember.asp";
        document.frmRequest.submit();
    }
    else {
        alert(username + " has not been deleted!");
        return false;
    }

}
function passwordchange(id) {
	if (id == '0') {
		document.getElementById('change').innerHTML = "<font color=\"#FF0000\">*";
	}
	else {
		document.frmRequest.password.disabled = true;
	}
	if (id.toUpperCase() == 'ADMIN') {
		document.frmRequest.userid.disabled = true;
	}

}
function disablepassword() {
    document.frmRequest.password.readOnly = document.frmRequest.chkChange.checked == false;
}
function change_pwd_check()
{
	/*
		Check Requirements for the Change Password Page
		User ID Must Not be Null
		Password Must Not be Null
	*/
	if (document.frmRequest.oldpassword.value == '0'||document.frmRequest.oldpassword.value == ''||document.frmRequest.oldpassword.Length==0)
	{
		alert("You must enter your old Password");
		return false;
	}
	if (document.frmRequest.newpassword1.value == '0'||document.frmRequest.newpassword1.value == ''||document.frmRequest.newpassword1.Length==0)
	{
		alert("You must enter a new Password");
		return false;
	}
	if (document.frmRequest.newpassword2.value == '0'||document.frmRequest.newpassword2.value == ''||document.frmRequest.newpassword2.Length==0)
	{
		alert("You must re-enter a new Password");
		return false;
	}
	if (document.frmRequest.newpassword1.value != document.frmRequest.newpassword2.value)
	{
		alert("Your passwords do not match");
		return false;
	}


	document.frmRequest.submit();
}
/*
    Webinar Scripts
*/
function EditWebinar(webinarid) {
    document.frmRequest.webinarid.value = webinarid;
    document.frmRequest.submit();
}
function webinar_edit_check() {
    /*
    Check Requirements for Adding/Editing a Webinar
    */
    var str;
    var sDate=getWebinarDateShort(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex);
    if (!isDate(sDate)){
		alert("You have entered an invalid date");
		return false;
    }
    if (!checkWebinarDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex)){
	        alert("The Webinar cannot be dated in the past!");
        	return false;
    }

    var sPostDate=getWebinarPostDateShort(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex);
    if (!isDate(sPostDate)){
		alert("You have entered an invalid posting date");
		return false;
    }

    if (!checkWebinarDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex)){
	        alert("The Webinar cannot be dated in the past!");
        	return false;
    }


    if (!checkWebinarPostDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex, document.frmRequest.cboPostStartDay.selectedIndex, document.frmRequest.cboPostStartMonth.selectedIndex, document.frmRequest.cboPostStartYear.selectedIndex)){
	        alert("The Posting date must be before the Webinar date!");
        	return false;
    }

    if (document.frmRequest.chkPayment.checked == true) {
	if (!checkCCFields()) {
		return false;
	}
    }

    str = "Webinar Confirmation\n\n";
    str += "Presenter: " + document.frmRequest.Presenter.value + "\n";
    str += "Company: " + document.frmRequest.Companyname.value + "\n";
    str += "Title: " + document.frmRequest.Title.value + "\n";
    str += "Date: " + getWebinarDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex) + "\n";
    str += "Time: " + getWebinarTime(document.frmRequest.cboHour.selectedIndex, document.frmRequest.cboMinute.selectedIndex) + "\n\n";
    str += "Web Address: " + document.frmRequest.WebAddress.value + "\n";
    var ans = confirm(str);
    if (ans) {
       calculateCost();
       document.frmRequest.submit();
    }
    else {
        return false;
    }

}
function checkWebinarDate(iDay, iMonth, iYear)
{
	// Should not be allowed to enter webinar dates that have already passed
    var sDay = document.frmRequest.cboDay[iDay].text;
    var sYear = document.frmRequest.cboYear[iYear].text;

    var webDate= new Date();
    webDate.setFullYear(sYear,iMonth,sDay);

    var yesterday=new Date();
    yesterday.setDate(yesterday.getDate()-1);

    return webDate>yesterday;
}
function getWebinarDateShort(iDay, iMonth, iYear)
{
    var sDay = document.frmRequest.cboDay[iDay].text;
    var sMonth = document.frmRequest.cboMonth[iMonth].value;
    var sYear = document.frmRequest.cboYear[iYear].text;
    var sDate = sDay + "/" +  sMonth + "/" +sYear
    return sDate;
}
function getWebinarDate(iDay, iMonth, iYear)
{
    var sDay = document.frmRequest.cboDay[iDay].text;
    var sMonth = document.frmRequest.cboMonth[iMonth].text;
    var sYear = document.frmRequest.cboYear[iYear].text;
    var sDate = sMonth + " " + sDay + ", " + sYear
    return sDate;
}
function getWebinarTime(iHour, iMinute)
{
    var sHour = document.frmRequest.cboHour[iHour].text;
    var sMinute = document.frmRequest.cboMinute[iMinute].text;
    var sTime = sHour + ":" + sMinute
    return sTime;
}

function getWebinarPostDateShort(iDay, iMonth, iYear)
{
    var sDay = document.frmRequest.cboPostStartDay[iDay].text;
    var sMonth = document.frmRequest.cboPostStartMonth[iMonth].value;
    var sYear = document.frmRequest.cboPostStartYear[iYear].text;
    var sDate = sDay + "/" +  sMonth + "/" +sYear
    return sDate;
}

function checkWebinarPostDate(iDay, iMonth, iYear, iPostDay, iPostMonth, iPostYear)
{
	// posting date must be before the webinar date
    var sDay = document.frmRequest.cboDay[iDay].text;
    var sYear = document.frmRequest.cboYear[iYear].text;
    var webDate= new Date();
    webDate.setFullYear(sYear,iMonth,sDay);

    var sPostDay = document.frmRequest.cboPostStartDay[iPostDay].text;
    var sPostYear = document.frmRequest.cboPostStartYear[iPostYear].text;
    var postDate=new Date();
    postDate.setFullYear(sPostYear,iPostMonth,sPostDay);

    return webDate>postDate;
}

function DeleteWebinar(webinarid, webinartitle) {

    var ans = confirm("Delete Webinar: " + webinartitle + "!!" + "\n\nThis Cannot be undone!");
    if (ans) {
        alert(webinartitle + " will be deleted");
        document.frmRequest.webinarid.value = webinarid;
        document.frmRequest.action = "deletewebinar.asp";
        document.frmRequest.submit();
    }
    else {
        alert(webinartitle + " has not been deleted!");
        return false;
    }

}
/*
        Category Scripts
*/
function EditCategory(categoryid) {
    document.frmRequest.categoryid.value = categoryid;
    document.frmRequest.submit();
}
function Category_Edit_Check() {
    /*
    Check Requirements for Adding/Editing a Category
    */
    if (document.frmRequest.category.value == '0' || document.frmRequest.category.value == '' || document.frmRequest.category.value.length == 0) {
        alert('You Must Enter a Category');
        return false;
    }	
    var ans = confirm("Save Category?");
    if (ans) {
        document.frmRequest.submit();
    }
    else {
        alert(category + " has not been edited!");
        return false;
    }
}
function DeleteCategory(categoryid, category) {

    var ans = confirm("Delete Category" + category + "!!" + "\n\nThis Cannot be undone!");
    if (ans) {
        alert(category + " will be deleted");
        document.frmRequest.categoryid.value = categoryid;
        document.frmRequest.action = "deletecategory.asp";
        document.frmRequest.submit();
    }
    else {
        alert(category + " has not been deleted!");
        return false;
    }

}

/*
    Utility Scripts
*/
// Check for Valid Email Address
function echeck(str) {

    var at = "@"
    var dot = "."
    var lat = str.indexOf(at)
    var lstr = str.length
    var ldot = str.indexOf(dot)
    if (str.indexOf(at) == -1) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(at) == -1 || str.indexOf(at) == 0 || str.indexOf(at) == lstr) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(dot) == -1 || str.indexOf(dot) == 0 || str.indexOf(dot) == lstr) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(at, (lat + 1)) != -1) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.substring(lat - 1, lat) == dot || str.substring(lat + 1, lat + 2) == dot) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(dot, (lat + 2)) == -1) {
        alert("Invalid E-mail ID")
        return false
    }

    if (str.indexOf(" ") != -1) {
        alert("Invalid E-mail ID")
        return false
    }

    return true
}

// Check String only contains alphanumeric Characters
function alphanumeric(alphane) {
    var numaric = alphane;
    for (var j = 0; j < numaric.length; j++) {
        var alphaa = numaric.charAt(j);
        var hh = alphaa.charCodeAt(0);
        if ((hh > 47 && hh < 58) || (hh > 64 && hh < 91) || (hh > 96 && hh < 123)) {
        }
        else {
            return false;
        }
    }
    return true;
}
function openwindow(url) {
    window.open('admin/login.asp','Admin', 'left=20,top=20,width=800,height=600,toolbar=0,resizable=0,scrollbars=1');

}
function webinar_search() {
    document.frmRequest.dosearch.value = "1";
    //document.frmRequest.action = "index.asp";
    document.frmRequest.action = "";
    document.frmRequest.submit();
}
function new_user_add_check() {
    /*
    Check Requirements for Adding/Editing a User
    User ID Must Not be Null
    User ID must be a a valid email address
    Password Must Not be Null
    */
    if (document.frmRequest.userid.value == '0' || document.frmRequest.userid.value == '' || document.frmRequest.userid.value.length == 0) {
        alert('You Must Enter a User ID');
        return false;
    }
    if (echeck(document.frmRequest.userid.value) == false) {
            return false;
    }
    if (document.frmRequest.password.value == '0' || document.frmRequest.password.value == '' || document.frmRequest.password.value.length == 0) {
        alert('You must enter a Password');
        return false;
    }
    document.frmRequest.submit();
   }
   /*
function for limiting the amount of text in a text area field
*/
function limitText(limitField, limitCount, limitNum) {
   if (limitField.value.length > limitNum) {
   limitField.value = limitField.value.substring(0, limitNum);
   } else {
   limitCount.value = limitNum - limitField.value.length;
   }
   }


   /*
   Date Validation functions

*/

var dtCh= "/";
var minYear=1900;
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
}

function days_between(date1, date2) {

    // The number of milliseconds in one day
    var ONE_DAY = 1000 * 60 * 60 * 24

    // Convert both dates to milliseconds
    var date1_ms = date1.getTime()
    var date2_ms = date2.getTime()

    // Calculate the difference in milliseconds
    var difference_ms = Math.abs(date1_ms - date2_ms)
    
    // Convert back to days and return
    return Math.round(difference_ms/ONE_DAY)

}

function calculateCost() {
	// posting date must be before the webinar date

    var sDate=getWebinarDateShort(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex);
    if (!isDate(sDate)){
		alert("You have entered an invalid date");
		return false;
    }
    if (!checkWebinarDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex)){
	        alert("The Webinar cannot be dated in the past!");
        	return false;
    }

    var sPostDate=getWebinarPostDateShort(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex);
    if (!isDate(sPostDate)){
		alert("You have entered an invalid posting date");
		return false;
    }

    if (!checkWebinarDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex)){
	        alert("The Webinar cannot be dated in the past!");
        	return false;
    }


    if (!checkWebinarPostDate(document.frmRequest.cboDay.selectedIndex, document.frmRequest.cboMonth.selectedIndex, document.frmRequest.cboYear.selectedIndex, document.frmRequest.cboPostStartDay.selectedIndex, document.frmRequest.cboPostStartMonth.selectedIndex, document.frmRequest.cboPostStartYear.selectedIndex)){
	        alert("The Posting date must be before the Webinar date!");
        	return false;
    }

    iDay = document.frmRequest.cboDay.selectedIndex;
    iMonth = document.frmRequest.cboMonth.selectedIndex; 
    iYear = document.frmRequest.cboYear.selectedIndex;

    iPostDay = document.frmRequest.cboPostStartDay.selectedIndex;
    iPostMonth = document.frmRequest.cboPostStartMonth.selectedIndex; 
    iPostYear = document.frmRequest.cboPostStartYear.selectedIndex;

    var sDay = document.frmRequest.cboDay[iDay].text;
    var sYear = document.frmRequest.cboYear[iYear].text;
    var webDate= new Date();
    webDate.setFullYear(sYear,iMonth,sDay);

    var sPostDay = document.frmRequest.cboPostStartDay[iPostDay].text;
    var sPostYear = document.frmRequest.cboPostStartYear[iPostYear].text;
    var postDate=new Date();
    postDate.setFullYear(sPostYear,iPostMonth,sPostDay);

    var sCost;
    var dayCount = days_between(postDate, webDate);
    var monthCount = 1;
    var remainder;
    if(dayCount>30){
       monthCount = 0;
       remainder = (dayCount % 30);
       dayCount = dayCount - remainder;
       monthCount = dayCount/30;
       if(remainder>0){
          monthCount+=1;
       }
    }
    sCost = monthCount*20;

    document.getElementById('Calculated_Show').innerHTML = formatCurrency(sCost);
    document.frmRequest.Calculated.value = sCost;

    return true;
}

function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + '$' + num + '.' + cents);
}

function showMe(id) { // This gets executed when the user clicks on the checkbox
var obj = document.getElementById(id);
if (obj.style.visibility=="hidden") { // if it is checked, make it visible, if not, hide it
obj.style.visibility = "visible";
} else {
obj.style.visibility = "hidden";
}
}

function checkCCFields() {
	if(document.frmRequest.card_type.selectedIndex=="") {
		alert("You must Select a Credit Card Type");
		return false;
	}

	if (document.frmRequest.card_number.value == ''||document.frmRequest.card_number.Length==0) {
		alert("You must Enter a Credit Card Number");
		return false;
	}

	if (document.frmRequest.card_type[document.frmRequest.card_type.selectedIndex].value == "Visa") {
		if (!isValidVisa(document.frmRequest.card_number.value)) {
			    alert("You must enter a Valid Visa number");
			    return false;
		}
	}

	if (document.frmRequest.card_type[document.frmRequest.card_type.selectedIndex].value == "Mastercard") {
		if (!isValidMasterCard(document.frmRequest.card_number.value)) {
			alert("You must enter a Valid VisaMastercard number");
			return false;
		}
	}
	if (document.frmRequest.name_on_card.value == ''||document.frmRequest.name_on_card.Length==0) {
		alert("You must Enter a Card Name");
		return false;
	}
	if (document.frmRequest.security_code.value == ''||document.frmRequest.security_code.Length==0) {
		alert("You must Enter a Security Code");
		return false;
	}
	return true;
}

function luhnCheckSum(sCardNum) {

	var iOddSum = 0;
	var iEvenSum = 0;
	var bIsOdd = true;

	for (var i = sCardNum.length - 1; i >= 0; i--) {

		var iNum = parseInt(sCardNum.charAt(i));

		if (bIsOdd) {
			iOddSum += iNum;
		} else {
			iNum = iNum * 2;
			if (iNum > 9) {
				iNum = eval(iNum.toString().split("").join("+"));
			}
			iEvenSum += iNum;
		}

		bIsOdd = !bIsOdd;
	}

	return ((iEvenSum + iOddSum) % 10 == 0);
}

function isValidMasterCard(sText) {
	var reMasterCard = /^(5[1-5]\d{2})[\s\-]?(\d{4})[\s\-]?(\d{4})[\s\-]?(\d{4})$/;

	if (reMasterCard.test(sText)) {

		var sCardNum = RegExp.$1 + RegExp.$2 + RegExp.$3 + RegExp.$4;

		return luhnCheckSum(sCardNum);

	} else {
		return false;
	}
}

function isValidVisa(sText) {
	var reVisa = /^(4\d{12}(?:\d{3})?)$/;

	if (reVisa.test(sText)) {
		return luhnCheckSum(RegExp.$1);
	} else {
		return false;
	}
}