var ErrMessage;
var ErrItem;
var ErrFound = false;
var EmailIdLastMaxChar = 20
var EmailIdLastMinChar = 0
var NormalCharString = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n\f";
var NumericString = "1234567890";

//Check the given item value is null or not.
//If the given Item value is null and compalsary(C) then it sets the error message and return true, Otherwise, it just return true.
//If the given item value is not null then it returns false.
function CheckNull(){
    Item = arguments[0];
    if ((Item.type == "text" || Item.type == "password" || Item.type == "textarea" || Item.type == "file" || Item.type == "hidden") && Item.value == "")
        return (setError("Please Enter A "+Item.name, Item, true));
    else if (Item.name!="paymentto" && Item.type == "select-one" && Item.selectedIndex <= 0)
        return (setError("Please Select "+Item.name, Item, true));

    return false;
}

//Check All Spaces
function CheckAllSpaces(){
    for(var i=0;i<arguments[0].value.length;i++)
        if (arguments[0].value.charAt(i) != " ")
            return false;

    return (setError("Please Enter A "+Item.name, Item, true));
}

//Remove Leading spaces
function LTrimSpaces(){
    for (var i=0;i<arguments[0].value.length;i++)
        if (arguments[0].value.charAt(i) != " ")
            break;

    return arguments[0].value.substr(i);
}

//Remove Trailing spaces
function RTrimSpaces(){
    for (var i=arguments[0].value.length-1;i>0;i--)
        if (arguments[0].value.charAt(i) != " ")
            break;

    return arguments[0].value.substr(0,i+1);
}

//Check the every charecter in the given Item value, that is in the given character list or not.
//If the character not in the given character list it sets the error message and return true.
//If the all the characters in the given Item value are in the given character list, it returns false.
function CheckeachChar(){
    Item = arguments[0];
    if (Item.type == "text" || Item.type == "password" || Item.type=="textarea" || Item.type == "file" || Item.type == "hidden"){
        var CharString = arguments[1];
        for(var i=0;i<Item.value.length;i++){
            if (CharString.indexOf(Item.value.charAt(i)) == -1){
                return(setError("Invalid "+Item.name+"  ! Please Re-enter ", Item, true));
            }
        }
    }
    return false;
}


//Check the given Item value is email Id or not.
//If the '@' symbol at begining or not entered it will set Error message.
//If the '@' symbol occured more than one's it set's Error message.
//After the '@' symbol there is no '.' symbol it will set's Error message.
//If '@' symbol and '.' symbol occured together then it will set's Error message.
//If '.' symbol occured at end of the Item value it will set's Error message.
//If the the email id is correct then it just return false.
function CheckEmailId(){
    Item = arguments[0];
    var IndexofAtdharate = Item.value.indexOf("@");
    var LastIndexofPeriod = Item.value.lastIndexOf(".");
    var IndexOfPeriod = Item.value.indexOf(".");
    if ((LastIndexofPeriod + EmailIdLastMinChar + 1 > Item.value.length) || (Item.value.length > LastIndexofPeriod + EmailIdLastMaxChar + 1))
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (IndexofAtdharate == -1 || IndexofAtdharate == 0)
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (IndexofAtdharate < Item.value.lastIndexOf("_"))
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (IndexofAtdharate == (Item.value.indexOf(".") - 1))
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (IndexofAtdharate != Item.value.lastIndexOf("@"))
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (Item.value.substring(IndexofAtdharate+1).indexOf(".") == -1)
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else if (Item.value.substring(0,IndexofAtdharate).lastIndexOf(".") == IndexofAtdharate-1)
        setError("Invalid Email Address! Please Re-enter ", Item, true);
    else {
        var CharString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_-.@";
        for(var i=0;i<Item.value.length;i++){
            if (CharString.indexOf(Item.value.charAt(i)) == -1){
                setError("Invalid Email Address! Please Re-enter ", Item, true);
                return true;
            }
        }
        return false;
    }
    return true;
}

//Check the Item length with in the given limits or not. If it is then returns false, Otherwise set the Error message and return true.
function CheckLength(){
    Item = arguments[0];
    minLength = arguments[1];
    maxLength = arguments[2];

    if (Item.value.length < minLength || Item.value.length > maxLength)
        return(setError(Item.name +" must contains at least "+minLength+" characters and no more than "+maxLength+ " characters ", Item, true));
    else
        return false;
}

//Check the given Item begins with any given charecters then it sets error message and return true, Otherwise return false.
function CheckBeginingChars(Item,Chars){
    Item = arguments[0];
    Chars = arguments[1];
    var NotAllowedChars = Chars.split("");
    for(var i=0;i<NotAllowedChars.length;i++){
        if (Item.value.indexOf(NotAllowedChars[i]) == 0){
            return (setError("Starting letter should not '"+NotAllowedChars[i]+"'  in "+Item.name, Item, true));
        }
    }
    return false;
}

//Check the Field is Numeric or not
function CheckNumeric(){
    Item = arguments[0];
    sign=arguments[1];
    type=arguments[2];

    if(sign=="POSITIVE" && Item.value<0)
        return(setError(Item.name + " should contain only Positive Numeric values", Item, true));
    else if(sign=="NEGATIVE" && Item.value>0)
        return(setError(Item.name + " should contain only Negative Numeric values", Item, true));
    else if(type=="INTEGER" && Item.value.indexOf('.')!=-1)
        return(setError(Item.name + " should contain only Whole Numbers", Item, true));
    else {
        if (isNaN(Item.value)){
            return(setError(Item.name + " should contain only Numeric values(0-9)", Item, true));
        }
        return false;
    }
}

//Set the error message
function setError(){
    if (arguments.length == 3){
        ErrMessage = arguments[0];
        ErrItem = arguments[1];
        return true;
    }
    return false;
}

// If check box corresponding to the terms and conditionsTerms and conditions
function CheckTerms()
{
    Item = arguments[0];
    if(!(Item.checked) && (Item.type =="checkbox") && (Item.name == "terms"))
    {
        ErrorMessage="Please agree to the Terms";
        DisplayError(ErrorMessage,Item);
        return true;
    }
}

//Display the given error message and place the control on the particular field.
function DisplayError(ErrorMessage, Item){
    alert(ErrorMessage);
    ErrMessage = "";
    ErrFound = false;
    Item.focus();
}

//This function for all the checking
function CheckValidate(){
    Item = arguments[0];
    ErrFound = false;
    CheckMax = arguments.length;
    if (arguments[CheckMax-2] == "UserDefined")	CheckMax = CheckMax -2 ;
    for(var i=1;i<CheckMax;){
        var IncArgVal = 1;
        TypeOfValidation = arguments[i];
        switch(TypeOfValidation){
            case "NULL" :
                if (CheckNull(Item)) {
                    ErrFound = true;
                }
            break;
            case "NUMERIC" :
                if (CheckNumeric(Item,arguments[i+1],arguments[i+2])) {
                    ErrFound = true;
                }
            break;
            case "EMAIL" :
                CheckAllSpaces(Item);
                if (!CheckNull(Item) && CheckEmailId(Item)) {
                    ErrFound = true;
                }
            break;
            case "LENGTH" :
                if(!CheckNull(Item) && CheckLength(Item,arguments[i+1],arguments[i+2])){
                    ErrFound = true;
                }
                IncArgVal = 3;
            break;
            case "CHARS" :
                if(!CheckNull(Item) &&  CheckeachChar(Item,arguments[i+1])){
                    ErrFound = true;
                }
                IncArgVal = 2;
            break;
            case "BEGINCHAR" :
                if (!CheckNull(Item) && CheckBeginingChars(Item,arguments[i+1])){
                    ErrFound = true;
                }
                IncArgVal = 2;
            break;
            case "TERMS" :
                if(CheckTerms(Item)){
                    Errfound = true;
                    return false;
                }
            case "PASSWORD" :
                if (arguments[i+1].value != Item.value){
                    setError("Confirm Password should match with the Password! Please Re-enter",arguments[i+1],true);
                    ErrFound = true;
                }
                IncArgVal = 2;break;
        }

        if (ErrFound)
            break;
        i += IncArgVal;
    }

    if (Item.type == "text" || Item.type == "password" || Item.type == "textarea" || Item.type == "file")
        if (!CheckNull(Item) && CheckAllSpaces(Item))
            ErrFound = true;
            if (ErrFound && arguments[arguments.length-1] == "No Alert"){
                return false;
    }

    if (ErrFound && arguments[arguments.length-2] != "UserDefined") {
        DisplayError(ErrMessage, ErrItem);
        return false;
    }
    else if (ErrFound && arguments[arguments.length-2] == "UserDefined") {
        DisplayError(ErrMessage.substring(0,ErrMessage.lastIndexOf(" ")) + " " + arguments[arguments.length-1], ErrItem);
        return false;
    }

    return true;
}

function getObj(name) {
    if (document.all) {
        return document.all(name);
    }
    else {
        return document.getElementById(name);
    }
}

function open_window(url,width,height,name) {
    if (open_window.arguments[4] == 1) {
        remote=window.open(url,name,'status=no,scrollbars=yes,resizable=yes,top=100,left=100,height='+height+',width='+width);
        remote.focus();
    }
    else {
        remote=window.open(url,name,'status=no,scrollbars=yes,resizable=no,top=100,left=100,height='+height+',width='+width);
        remote.focus();
    }

    if (remote != null) {
        if (remote.opener == null)
            remote.opener = self;
    }
}

function checkAll(val) {
    if(arguments[1]) {
        eval("objFrm = document." + arguments[1]+";");
    }
    else {
        objFrm = document.forms[1];
    }

    for(var i=0;i<objFrm.elements.length;i++) {
        if(objFrm.elements[i].type == "checkbox") {
            objFrm.elements[i].checked = val;
        }
    }
}

function checkAllInForm(val,formName) {
    var objForm = eval("document." + formName);
    for(var i=0;i<objForm.elements.length;i++) {
        if(objForm.elements[i].type == "checkbox") {
            objForm.elements[i].checked = val;
        }
    }
}

function embedMusic(source) {
    document.write('<EMBED SRC="' + source + '" HIDDEN="true" AUTOSTART="true" >');
}

function go() {
    if(!CheckValidate(document.memberDetails.Name,"NULL","LENGTH","3","20","CHARS","ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ","","Name"))
        return false;

    if(!CheckValidate(document.memberDetails.Email_Address,"NULL","EMAIL","LENGTH","6","80","","Email"))
        return false;

    if(!CheckValidate(document.memberDetails.Phone_Number,"NULL","NUMERIC","LENGTH","6","80","","Phone Number"))
        return false;

    if(!CheckValidate(document.memberDetails.Questions_Comments,"NULL","UserDefined","Your Question"))
        return false;

    if(!CheckValidate(document.memberDetails.code,"NULL","UserDefined","Security Code"))
        return false;
}

function indexgo(){
    if(!CheckValidate(document.memberDetails.Name,"NULL","LENGTH","3","20","CHARS","ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz","","Name"))
        return false;
    if(!CheckValidate(document.memberDetails.Email,"NULL","EMAIL","LENGTH","6","80","","Email"))	return false;
        return true;
}

function containergo(){
    if(!CheckValidate(document.containerDetails.Email,"NULL","EMAIL","LENGTH","6","80","","Email"))	return false;
        return true;
}