/*Michael Khalili
Check if it matches the username format for the site
*/
function UsernameFormatValid(strUsername){
    return (strUsername.match(/[a-zA-Z0-9]{6,20}/) == strUsername) && (strUsername.substring(0,1).match(/[a-zA-Z]{1}/) != null) ;
}
/*Michael Khalili
verify password style
*/
function PasswordFormatCorrect(strPassword){
    return (strPassword.length >= 6 && strPassword.length <= 50);
}
/*Michael Khalili
verify password style
*/
function PasswordFormatValid(strPassword){
    return (strPassword.length >= 6 && strPassword.length <= 50);
}
/*Michael Khalili
Return the browser brand name
*/
function BrowserBrandName(){
//Check for IE
    if (navigator.appVersion.indexOf('MSIE')!=-1){
        var version=0;
        temp=navigator.appVersion.split('MSIE')
        version=parseFloat(temp[1])
        if (version>=5.5){
            return 'IE';
        }else if (version>=0){
            return 'IE-OLD';
        }
    }
}
/*
Sandeep V. Tamhankar (stamhankar hotmail.com)
http://javascript.internet.com/forms/check-email.html
This script and many more are available free online at 
The JavaScript Source!! http://javascript.internet.com 
*/
function EmailFormatValid(emailStr) {
    var emailPat=/^(.+)@(.+)$/;
    var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
    var validChars="\[^\\s" + specialChars + "\]";
    var quotedUser="(\"[^\"]*\")";
    var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
    var atom=validChars + '+';
    var word="(" + atom + "|" + quotedUser + ")";
    var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
    var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
    var matchArray=emailStr.match(emailPat);
    
    if (matchArray==null) {
	    //alert("Email address seems incorrect (check @ and .'s)");
	    return false;
    }
    var user=matchArray[1];
    var domain=matchArray[2];

    if (user.match(userPat)==null) {
        //alert("The username doesn't seem to be valid.");
        return false;
    }

    var IPArray=domain.match(ipDomainPat);
    if (IPArray!=null) {
	      for (var i=1;i<=4;i++) {
	        if (IPArray[i]>255) {
	            //alert("Destination IP address is invalid!");
		    return false;
	        }
        }
        return true;
    }

    var domainArray=domain.match(domainPat);
    if (domainArray==null) {
	    //alert("The domain name doesn't seem to be valid.");
        return false;
    }

    var atomPat=new RegExp(atom,"g");
    var domArr=domain.match(atomPat);
    var len=domArr.length;
    if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) {
       //alert("The address must end in a three-letter domain, or two letter country.");
       return false;
    }

    if (len<2) {
       //var errStr="This address is missing a hostname!";
       //alert(errStr);
       return false;
    }

    return true;
}

/*Michael Khalili
Only return filtered data of the input object being inspected
*/
function NumbersOnlyFilter(objTextbox){
    var strValue = objTextbox.value.replace(/[^0-9.-]/g, ''); // strip non-digit chars
    if (objTextbox.value != strValue){
        objTextbox.value = strValue;
    }
}



/* Michael Khalili
Ajax call to server and returns value
*/
// initialize XMLHttpRequest object
var xmlobj=null;

//the url, whether to use post or get and the function to get called on success
function sendRequest(strURL,blnPost,funcSuccess){ 
    // check for existing requests
    if(xmlobj!=null&&xmlobj.readyState!=0&&xmlobj.readyState!=4){
        xmlobj.abort();
    }
    try{
        // instantiate object for Firefox, Nestcape, etc.
        xmlobj=new XMLHttpRequest();
    }
    catch(e){
        try{
            // instantiate object for Internet Explorer
            xmlobj=new ActiveXObject('Microsoft.XMLHTTP');
        }
        catch(e){
            // Ajax is not supported by the browser
            xmlobj=null;
            alert('Error: Your browser does not support Ajax');
            return false;
        }
    }
    // assign state handler
    //because i'm passing a function with a function into a function i have to do it this way instead of just  = stateChecker(funcSuccess);
    xmlobj.onreadystatechange=function() {stateChecker(funcSuccess)}; 

    //cache bust
    if(strURL.search(/\?/) > -1){
        strURL += '&timestamp=' + new Date().getTime();
    }else{
        strURL += '?timestamp=' + new Date().getTime();
    }    

    // open socket connection
    if (blnPost){
        var AllInputValues = FormInputValues();
        xmlobj.open('POST',strURL,true);
        xmlobj.setRequestHeader("Content-type", "application/x-www-form-UrlEncoded");
        xmlobj.setRequestHeader("Content-length", AllInputValues.length);
        xmlobj.setRequestHeader("Connection", "close");
        // send request
        xmlobj.send(AllInputValues);
    }else{
        xmlobj.open('GET',strURL,true);
        // send request
        xmlobj.send(null);
    }
}

// check request status
function stateChecker(funcSuccess){
    // if request is completed
    var strReturn;
    if(xmlobj.readyState==4){
        // if status == 200 display text file
        try{
            if(xmlobj.status==200){
                // call function to handle return value
                
                // display data into container
                //AjaxReturnData=;
                strReturn = xmlobj.responseText;
            }
            else{
                strReturn = 'Ajax error 1: ' + xmlobj.statusText + '\n\n' + xmlobj.responseText;
            }
        }catch(err){
            strReturn = 'Ajax error 2: ' + err.description;
        }
        funcSuccess(strReturn);
    }
}
function CanUseAjax(){
    if (document.getElementById && document.getElementsByTagName && document.createElement){
        return true;
    }else{
        return false;
    }
}

/*Michael Khalili
Grabs all form input fields and values then creates a post string. 
For checkboxes it only sends the data if it's checked.
Input fields with _ are ignored because they're asp.net values and break posts to other asp.net pages.
*/
function FormInputValues(){
    var objInputFields = document.getElementsByTagName("INPUT");
    var InputData = '';
    var i;
    for (i = 0; i < objInputFields.length; i++) {
        if (objInputFields[i].id != '' && objInputFields[i].value != '' && objInputFields[i].id.substring(0,1) != '_' ){
            if (objInputFields[i].type == 'checkbox'){
                if (objInputFields[i].checked == true){InputData += '&' + objInputFields[i].id + '=' + objInputFields[i].checked;}
            }else if (objInputFields[i].type == 'radio'){
                if (objInputFields[i].checked == true){InputData += '&' + objInputFields[i].id + '=' + objInputFields[i].checked;}
                if (objInputFields[i].checked == true){InputData += '&' + objInputFields[i].name + '=' + UrlEncode(objInputFields[i].value);}
            }else{
                InputData += '&' + objInputFields[i].id + '=' + UrlEncode(objInputFields[i].value);
            }
        }
    }
    objInputFields = parent.document.getElementsByTagName("select");
    for (i = 0; i < objInputFields.length; i++) {
        InputData += '&' + objInputFields[i].id + '=' + UrlEncode(objInputFields[i].value);
    }

    objInputFields = document.getElementsByTagName("TEXTAREA");
    for (i = 0; i < objInputFields.length; i++) {
        if (objInputFields[i].id != '' && objInputFields[i].id.substring(0,1) != '_' ){
            try{
                InputData += '&' + objInputFields[i].id + '=' + UrlEncode(tinyMCE.getInstanceById(objInputFields[i].id).contentDocument.body.innerHTML); //+ tinyMCE.getInstanceById(objInputFields[i].id);
            }catch(e){
                InputData += '&' + objInputFields[i].id + '=' + UrlEncode(objInputFields[i].value);
            }
        }
    }
    objInputFields = parent.document.getElementsByTagName("select");
    for (i = 0; i < objInputFields.length; i++) {
        InputData += '&' + objInputFields[i].id + '=' + UrlEncode(objInputFields[i].value);
    }
    objInputFields = document.getElementsByTagName("iframe");
    for (i = 0; i < objInputFields.length; i++) {
        if (objInputFields[i].className == 'mceEditorIframe'){
            InputData += '&' + tinyMCE.getInstanceById(objInputFields[i].id).contentDocument.body.editorId + '=' + tinyMCE.getInstanceById(objInputFields[i].id).contentDocument.body.innerHTML;
        }
    }

    return InputData.substring(1,InputData.length); //remove the leading &
}

/*Michael Khalili
UrlEncode and decode
*/
function UrlEncode(strData) {
strData = escape(strData);
strData = strData.replace('+', '%2B');
strData = strData.replace('%20', '+');
strData = strData.replace('*', '%2A');
strData = strData.replace('/', '%2F');
strData = strData.replace('@', '%40');
return strData;
}

function URLDecode(strData) {
strData = strData.replace('+', ' ');
strData = unescape(strData);
return strData;
}

//Peter-Paul Koch from http://www.quirksmode.org/js/findpos.html
//no copywrite http://www.quirksmode.org/about/copyright.html
function ObjectPosition(obj) {
    var curleft = 0;
	var curtop = 0;
	if (obj.offsetParent) {
		do {
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
	}
	return [curleft,curtop];
}

/*Michael Khalili
Clear form error signal 
*/
function ErrorSignalClear(obj){
    if (typeof(obj) == 'string'){
        obj = document.getElementById(obj);
    }
    document.getElementById('LabelEx' + obj.id + 'ErrorSignal').style.visibility = 'hidden';
}

/*Michael Khalili
Get Querystring value based on field name. Just like .net request.quertystring.
Returns blank string if nothing found. 

Second function does a RequestQueryString like job on an inputted string
*/
function QueryStringRequest(strFieldName) {
    return QueryStringLikeParse(window.location.search.substring(1), strFieldName);
}

function QueryStringLikeParse(strQuery, strFieldName) {
    strQuery = String(strQuery).toLowerCase();
    var aryPairs = strQuery.split("&");
    var aryPair;
    strFieldName = strFieldName.toLowerCase();
    
    for (i=0;i<aryPairs.length;i++) {
        aryPair = aryPairs[i].split("=");
        if (aryPair[0] == strFieldName){
            return aryPair[1];
        }
    }
    return '';
}
/*Michael Khalili
checks if a field is numeric and allows for floating values.
*/
function NumericValid(intValue){
    return intValue != null && !isNaN(+intValue) && (intValue + '').replace(/\s{0,}/,'') != '';
}

/*Michael Khalili
Reads data sent back from an ajax call wrapped.
Example: <!--Start data-->the text that will be returned<!--End data-->
*/
function WrappedDataRead(strData, strStartTag, strEndTag){
    var intStartData;
    var intEndData;
    intStartData = strData.indexOf(strStartTag);
    intEndData = strData.indexOf(strEndTag);
    if (intStartData > -1 && intEndData > -1){
        return strData.substring((intStartData + strStartTag.length),intEndData);
    }
    return '';
}

//Michael Khalili
//Date functions
//Very basic check if the data is a date or not
function DateValid(value)
{return (!isNaN(new Date(value).getYear()) && !isNaN(new Date(value).getMonth()) && !isNaN(new Date(value).getDay()) );}

//check year passed in. value is a string and then converted to date 
function LeapYearVerify(strDate){
    var dtDate = new Date('2/29/' + (new Date(strDate)).getFullYear());
    return dtDate.toLocaleDateString().match(/Mar/gi) == null;
}

//Find start and end of dst
function DstDetect(){
    var dtDstDetect = new Date();
    var dtDstStart = '';
    var dtDstEnd = '';
    var dtDstStartHold = ''; //Temp date hold
    var intYearDayCount = 732; //366 (include leap year) * 2 (for two years)
    var intHourOfYear = 1;
    var intDayOfYear;
    var intOffset = TimezoneDetect();
    
    //Start from a year ago to make sure we include any previously starting dst
    dtDstDetect = new Date()
    dtDstDetect.setUTCFullYear(dtDstDetect.getUTCFullYear() - 1);
    dtDstDetect.setUTCHours(0,0,0,0);
   
    //Going hour by hour through the year will detect DST with shorter code but that could result in 8760 
    //FOR loops and several seconds of script execution time. Longer code narrows this down a little.
    //Go one day at a time and find out approx time of dst and if there even is DST on this computer.
    //Also need to make sure we catch the most current start and end cycle.
    for(intDayOfYear = 1; intDayOfYear <= intYearDayCount; intDayOfYear++){
        dtDstDetect.setUTCDate(dtDstDetect.getUTCDate() + 1);
                    
        if ((dtDstDetect.getTimezoneOffset() * (-1)) != intOffset && dtDstStartHold == ''){
            dtDstStartHold = new Date(dtDstDetect);
        }
        if ((dtDstDetect.getTimezoneOffset() * (-1)) == intOffset && dtDstStartHold != ''){
            dtDstStart = new Date(dtDstStartHold);
            dtDstEnd = new Date(dtDstDetect);
            dtDstStartHold = '';

            //DST is being used in this timezone. Narrow the time down to the exact hour the change happens
            //Remove 48 hours (a few extra to be on safe side) from the start/end date and find the exact change point
            //Go hour by hour until a change in the timezone offset is detected.
            dtDstStart.setUTCHours(dtDstStart.getUTCHours() - 48);
            dtDstEnd.setUTCHours(dtDstEnd.getUTCHours() - 48);
            
            //First find when DST starts
            for(intHourOfYear=1; intHourOfYear <= 48; intHourOfYear++){
                dtDstStart.setUTCHours(dtDstStart.getUTCHours() + 1);
                
                //If we found it then exit the loop. dtDstStart will have the correct value left in it.
                if ((dtDstStart.getTimezoneOffset() * (-1)) != intOffset){
                    break;
                }
            }

            //Now find out when DST ends
            for(intHourOfYear=1; intHourOfYear <= 48; intHourOfYear++){
                dtDstEnd.setUTCHours(dtDstEnd.getUTCHours() + 1);
                
                //If we found it then exit the loop. dtDstEnd will have the correct value left in it.
                if ((dtDstEnd.getTimezoneOffset() * (-1)) != (intOffset + 60)){
                    break;
                }
            }
            
            //Check if dst is currently on for this time frame. If it is then return these values. 
            //If not then keep going. The funciton will either return the last values collected 
            //or another value that is currently in effect
            if ((new Date()).getTime() >= dtDstStart.getTime() && (new Date()).getTime() <= dtDstEnd.getTime()){
                return new Array(dtDstStart,dtDstEnd);
            }

        }        
    }
    return new Array(dtDstStart,dtDstEnd);
}

function TimezoneDetect(){
    var dtDate = new Date('1/1/' + (new Date()).getUTCFullYear());
    var intOffset = 100; //set initial offset high so it is adjusted on the first attempt
    var intMonth;
    var intHoursUtc;
    var intHours;
    var intDaysMultiplyBy;
    
    //go through each month to find the lowest offset to account for DST
    for (intMonth=0;intMonth < 12;intMonth++){
        //go to the next month
        dtDate.setUTCMonth(dtDate.getUTCMonth() + 1);
        
        //To ignore daylight saving time look for the lowest offset. 
        //Since, during DST, the clock moves forward, it'll be a bigger number.
        if (intOffset > (dtDate.getTimezoneOffset() * (-1))){
            intOffset = (dtDate.getTimezoneOffset() * (-1));
        }
    }

    return intOffset;
}

/*Cookie functions from Tabber control
http://www.barelyfitz.com/projects/tabber/example-cookies.html
*/
function CookieSet(name, value, expires, path, domain, secure) {
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toUTCString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function CookieGet(name) {
    var dc = document.cookie;
    var prefix = name + "=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1) {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    } else {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1) {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}
function CookieDelete(name, path, domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" +
            ((path) ? "; path=" + path : "") +
            ((domain) ? "; domain=" + domain : "") +
            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}

/*
Michael Khalili
Scroll to object
*/
function ScrollTo(objValue){
    try{
        var objpos = ObjectPosition(objValue);
    }catch(e){}
    try{
        scroll(0,objpos[1]);
    }catch(e){}
    try{
        window.scrollTo(0,objpos[1]);
    }catch(e){}
}

/*
Michael Khalili
Check if object exists
*/
function ObjectExist(objValue) {
    if (!objValue) {
        return false;
    } else {
        return true;
    }
}