function formatCurrency(value, blankIfZero) {
    if (blankIfZero==null) blankIfZero=false;
    var num = toNumber(value);
    if (num==0 && blankIfZero) {
        return '';
    }
    return formatNumber(toNumber(value), '2', ',', '.', '$', '', '-', '');
}

function formatCurrencyNoDecimals(value) {
    if (value.length==0) { return ''; }
    return formatNumber(toNumber(value), '0', ',', '.', '', '', '-', '');
}

function formatNumberNoDecimals(value) {
    if (value.length==0) { return ''; }
    return formatNumber(toNumber(value), '0', ',', '', '', '', '-', '');
}

function formatNumberTwoDecimals(value, blankIfZero) {
    if (blankIfZero==null) blankIfZero=false;
    var num = toNumber(value);
    if (num==0 && blankIfZero) {
        return '';
    }
    return formatNumber(toNumber(value), '2', ',', '.', '', '', '-', '');
}

function formatIfNeg(el, val, red) {
    if (red==null) red=false;
    var nval = toNumber(val);
    if (nval < 0) {
        if (val.indexOf("-")>=0) {
            val = val.replace('-', '');
        }
        if (red) {
            el.style.color='#ff0000';
        }
        el.innerHTML = '(' + val + ')';
    } else {
        el.style.color='#000';
        el.innerHTML = val;
    }
}

function formatNumberThreeDecimals(value, blankIfZero) {
    if (blankIfZero==null) blankIfZero=false;
    var num = toNumber(value);
    if (num==0 && blankIfZero) {
        return '';
    }
    return formatNumber(toNumber(value), '3', ',', '.', '', '', '-', '');
}

function toNumber(input) {
    input = new String(input);
    var n = new Number(input.replace('$', '').replace(/,/g, ''));
    if (isNaN(n)) n=0;
    return n;
}

function toggleBlind(shade, userID, borrowerID) {
    var duration = 200;
    var shadeID = '#' + shade;
    var el = $(shadeID)[0];
    var isClosed = el.style.display=='none';
    $(shadeID).animate({ height: 'toggle' }, {duration:duration});
    img = $(shadeID + 'Arrow')[0];
    if (img) {
        if (isClosed) {
            img.src = '../images/icon_shadearrow_up.gif';
        } else {
            img.src = '../images/icon_shadearrow_down.gif';
        }
    }
    saveAction(shade, userID, borrowerID, isClosed);
}

function saveAction(shade, userID, borrowerID, open) {
    $.post('ShadeUpdate.do', { SubmitToken: '${SubmitToken}', shade: shade, userID: userID, borrowerID: borrowerID, open: open  },
            function(data) { }, 'json' );
}

// J = monthlyInterest, N = lengthInMonths, P = principal
function calculatePAndI(principal, annualInterest, lengthInMonths) {
    annualInterest /= 1200.0;
    return principal * (annualInterest / (1-(Math.pow(1+annualInterest, -lengthInMonths))));
}

function calculateLoanBalance(principal, annualInterest, lengthInMonths, paymentsMade) {
    annualInterest /= 1200.0;

    return principal * (1 - (Math.pow((1 + annualInterest), paymentsMade) - 1) / (Math.pow((1 + annualInterest), lengthInMonths)-1));
}

// current balance plus two months' interest
function calculatePayoff(balance, loanAmount, annualInterest, skippedPayments, rollEscrowAmount) {
    return balance + (loanAmount * ((annualInterest/36500) * skippedPayments * 30)) - rollEscrowAmount;
}


function changeTextbox(box, oldText, oldClass, newClass) {
    if (box.val().trim()==oldText) {
        box.val("");
    }
    box.removeClass(oldClass);
    box.addClass(newClass);
}

String.prototype.trim = function () {
    return this.replace(/^\s*/, "").replace(/\s*$/, "");
}

function resetTextbox(box, oldText, oldClass) {
    if (box.val().trim().length==0 || box.val().trim()==oldText) {
        box.addClass(oldClass);
        box.val(oldText);
    }
}

function formatPhoneNumber(str) {
    str = str.replace(/\(/g, '').replace(/\)/g, '').replace(/\-/g, '').replace(/ /g, '');
    var postfix='';
    if (str.length>10) {
        postfix = ' ' + str.substring(10);
        str = str.substring(0, 10);
    }
    if (str.length < 7) {

    } else if (str.length < 10) {
        str = str.substring(0, 3) + '-' + str.substring(3, 7) + ' ' + str.substring(7);
    } else {
        str = str.substring(0, 3) + '-' + str.substring(3,6) + '-' + str.substring(6);
    }
    str += postfix;
    return str;
}

function canonizePhoneNumber(str) {
    str = str.replace(/\(/g, '').replace(/\)/g, '').replace(/\-/g, '').replace(/ /g, '');
    var postfix='';
    if (str.length>10) {
        postfix = ' ' + str.substring(10);
        str = str.substring(0, 10);
    }
    return str + postfix;
}

// number formatting function
// copyright Stephen Chapman 24th March 2006, 10th February 2007
// permission to use this function is granted provided
// that this copyright notice is retained intact
// num = the number
// dec = num decimal places
// thou = thousands separator
// pnt = decimal point character ('.')
// curr1 = currency symbol on left side
// curr2 = currency symbol on right side
// n1 = negative symbol on left side
// n1 = negative symbol on right side
function formatNumber(num,dec,thou,pnt,curr1,curr2,n1,n2) {var x = Math.round(num * Math.pow(10,dec));if (x==Infinity||-x==Infinity) return x; if (x >= 0) n1=n2='';var y = (''+Math.abs(x)).split('');var z = y.length - dec; if (z<0) z--; for(var i = z; i < 0; i++) y.unshift('0');y.splice(z, 0, pnt); if(y[0] == pnt) y.unshift('0'); while (z > 3) {z-=3; y.splice(z,0,thou);}var r = curr1+n1+y.join('')+n2+curr2;return r;}

// another Stephen Chapman: http://javascript.about.com/library/bladdjs.htm
function addJavascript(jsname) {
var th = document.getElementsByTagName('head')[0];
var s = document.createElement('script');
s.setAttribute('type','text/javascript');
s.setAttribute('src',jsname);
th.appendChild(s);
}

// generally d1 is farther in the past
function monthsDifference(d1, d2) {
    var d1Num = d1.getFullYear() * 12 + d1.getMonth();
    var nowNum = d2.getFullYear() * 12 + d2.getMonth();
    var diff = nowNum - d1Num;
    return diff - (d2.getDate() > d1.getDate() ? 0 : 1);
}

// used in LeadList.jsp
String.prototype.endsWith = function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
}

function getMonthsInLoan(mc, yc) {
    var monthsInLoan = 0;
    if (mc>0 && yc>0) {
        var formats = new Array('M/yyyy', 'M/d/yyyy');
        var dateClosedStr = "" + mc + "/" + yc;
        var dateClosed = new Date(getDateFromFormatArr(dateClosedStr,formats));

        if (dateClosed!=null && dateClosed!=0 && dateClosed.getFullYear()>1970) {
            monthsInLoan = monthsDifference(dateClosed, new Date()) - 2;
        }
    }
    return monthsInLoan;
}

function getMonthObj(m) {
    return new Date(getDateFromFormat(m, 'M'));
}

// this algorithm looks wrong, but is correct for the bizarre behavior of the library
function getNextMonth(m) {
    var mNum = m.getMonth()+2;
    if (mNum>12) {
        mNum=1;
    }
    return getMonthObj(mNum);
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function isValidEmailAddress(address) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   return reg.test(address);
}

function noenter(e) { if(!e) e = window.event; return !(e.keyCode == 13); }

function popUp(URL, width, height) {
    if (width==undefined) {
        width = 400;
    }
    if (height==undefined) {
        height = 500;
    }

    day = new Date();
    id = day.getTime();
    eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=no,statusbar=no,menubar=no,resizable=0,width=" + width + ",height=" + height + "');");
}

function scenarioHelp(e, URL) {
    popUp(URL,600,500);
    if (window.event) {
        window.event.cancelBubble=true;
    } else {
        e.stopPropagation();        
    }

    return false;
}

function openSignupBox() {
    window.location='Signup.html';
}

function flagLead(fileID, submitToken) {
    if (fileID==0) return;
    var img = $('#star' + fileID)[0];
    var flagged = !(img.src.endsWith('icon_star_on.gif'));
    img.src = "../images/" + (flagged ? 'icon_star_on.gif' : 'icon_star.gif');
    $.post('FlagFile.do', { SubmitToken: submitToken, fileID: fileID, flagged: flagged },
        function(json) {
            if (json.emsg!='ok') {
                // some error occurred; reset state
                img.src = "../images/" + (flagged ? 'icon_star.gif' : 'icon_star_on.gif');
                displayErrorMessage(json.emsg);
            }
        }, 'json');
 }

function displayErrorMessage(msg) {
    if (msg==null || msg.length==0) {
        $('#errorBox').css('display','none');
    } else {
        $('#errorBox').css('display','');
        $('#errorText').html(msg);
    }
}

function initDatePickers(submitToken, fileID, dateText, noteText) {
    try {
        $(".dpoff").datepicker({
            buttonImage: '../images/icon_calendar.gif',
            buttonImageOnly: true,
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            closeText: 'Save',
            duration:'',
            showOn: 'both',
            onClose: function(dateText, inst, notetext) {
                calClosed($(this), dateText, notetext, submitToken)
            }
        });
        $(".dpon").datepicker({
            buttonImage: '../images/icon_calendar_on.gif',
            buttonImageOnly: true,
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            closeText: 'Save',
            duration:'',
            showOn: 'both',
            onClose: function(dateText, inst, notetext) {
                calClosed($(this), dateText, notetext, submitToken)
            }
        });
        $(".dpondayof").datepicker({
            buttonImage: '../images/icon_calendar_on_dayof.gif',
            buttonImageOnly: true,
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            closeText: 'Save',
            duration:'',
            showOn: 'both',
            onClose: function(dateText, inst, notetext) {
                calClosed($(this), dateText, notetext, submitToken)
            }
        });
        $(".dpondayafter").datepicker({
            buttonImage: '../images/icon_calendar_on_dayafter.gif',
            buttonImageOnly: true,
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            closeText: 'Save',
            duration:'',
            showOn: 'both',
            onClose: function(dateText, inst, notetext) {
                calClosed($(this), dateText, notetext, submitToken)
            }
        });
    } catch (e2) { alert(e2); }

    updateDPControls(fileID, dateText, noteText);
}

function calClosed(dp, dateText, notetext, submitToken) {
    dp.hide();
    var fieldID = dp.attr('id');
    var fileID = fieldID.substring(fieldID.indexOf('_') + 1);
    if (dateText=='delete') {
        deleteAlert(fileID, submitToken);
    } else {
        dp.datepicker('option', 'noteText', notetext);
        saveAlert(fileID, dateText, notetext, submitToken);
    }
}

function updateDPControls(fileID, dateText, noteText) {
    $('#datepickeroff_' + fileID).val('');
    $('#datepickeron_' + fileID).val(dateText);
    $('#datepickerondayof_' + fileID).val(dateText);
    $('#datepickerondayafter_' + fileID).val(dateText);
    $('#datepickeroff_' + fileID).datepicker('saveNoteText', noteText);
    $('#datepickeron_' + fileID).datepicker('saveNoteText', noteText);
    $('#datepickerondayof_' + fileID).datepicker('saveNoteText', noteText);
    $('#datepickerondayafter_' + fileID).datepicker('saveNoteText', noteText);
    $('#dpondiv' + fileID).attr('title', dateText + '\n' + noteText);
    $('#dpondayofdiv' + fileID).attr('title', dateText + '\n' + noteText);
    $('#dpondayafterdiv' + fileID).attr('title', dateText + '\n' + noteText);
}

function getDPTooltip(dateText, noteText) {
    return dateText + '\n' + noteText;
}

/// todo: handle error states
function saveAlert(fileID, dateText, noteText, submitToken) {
    try {
        if (dateText=='') {
            var today = new Date();
            dateText = formatDate(today, 'MM/dd/yyyy');
        }
        turnOnCal(fileID, dateText);
        $.post('FlagFile.do', { SubmitToken: submitToken, calendarID: fileID, dateText: dateText, noteText: noteText },
            function(json) {
                if (json.emsg!='ok') {
                    // some error occurred; reset state
                    $('#dpoffdiv' + fileID).show();
                    $('#dpondiv' + fileID).hide();
                    displayErrorMessage(json.emsg);
                } else {
                    updateDPControls(fileID, dateText, noteText);
                }
            }, 'json');
    } catch (e) { alert(e); }
}

function deleteAlert(fileID, submitToken) {
    try {
        turnOffCal(fileID);
        $.post('FlagFile.do', { SubmitToken: submitToken, calendarID: (fileID)},
            function(json) {
                if (json.emsg!='ok') {
                    // some error occurred; reset state
                    $('#dpoffdiv' + fileID).hide();
                    $('#dpondiv' + fileID).show();
                    displayErrorMessage(json.emsg);
                } else {
                    updateDPControls(fileID, '', '');
                }
            }, 'json');
    } catch (e) { alert(e); }
}

function turnOnCal(fileID, dateText, forParent) {
    var $$ = (forParent ? window.parent.$ : window.$) || false;
    if($$) {
        $$('#dpoffdiv' + fileID).hide();
        $$('#dpondiv' + fileID).hide();
        $$('#dpondayafterdiv' + fileID).hide();
        $$('#dpondayofdiv' + fileID).hide();
        var today = new Date(); today.setHours(0); today.setMinutes(0); today.setSeconds(0);
        var theDate = new Date(getDateFromFormat(dateText, 'M/d/yyyy'));
        if (theDate < today) {
            $$('#dpondayafterdiv' + fileID).show();
        } else {
            today.setDate(today.getDate()+1);
            if (theDate > today) {
                $$('#dpondiv' + fileID).show();
            } else {
               $$('#dpondayofdiv' + fileID).show();
            }
        }
    }
}

function turnOffCal(fileID, forParent) {
    var $$ = (forParent ? window.parent.$ : window.$) || false;
    if($$) {
        $$('#dpoffdiv' + fileID).show();
        $$('#dpondiv' + fileID).hide();
        $$('#dpondayafterdiv' + fileID).hide();
        $$('#dpondayofdiv' + fileID).hide();
    }
}