Login Form > Overlay Closes on Form Error
<p>I'm wrestling with an issue involving a log in form which is fetched using Ajax then displayed in a jQuery overlay. The overlay works perfectly, the issue is that when I click <code>submit</code> (using incorrect details) a the overlay closes instead of displaying the appropriate errors. The PHP code is on the login page (admin/index.php).</p>

<p>Button HTML:</p>

<pre><code>&lt;input name="Submit" type="submit" value="Log In" class="submit" /&gt;
</code></pre>

<p>Form tag HTML:</p>

<pre><code>&lt;form id="loginForm" method="post" action=""&gt;
</code></pre>

<p>PHP code:</p>

<pre><code>ob_start();
define('INCLUDE_CHECK',true);
include '../includes/config.php';
session_name('cmsLogin');
session_set_cookie_params(2*7*24*60*60);
session_start();

if($_SESSION['id'] &amp;&amp; !isset($_COOKIE['cmsRemember']) &amp;&amp; !$_SESSION['rememberMe']) {
    $_SESSION = array();
    session_destroy();
}

if($_SESSION['id'] &amp;&amp; isset($_COOKIE['cmsRemember'])) {
    header("Location: loggedIn.php");
}

if($_POST['formName']=='login') {
    $err = array();

    if(!$_POST['email'] || !$_POST['password'])
        $err[] = '&lt;strong&gt;Error:&lt;/strong&gt; Please ensure the email &amp;amp; password fields have been completed.';

    if(!count($err)) {
        $_POST['email'] = mysql_real_escape_string($_POST['email']);
        $_POST['password'] = mysql_real_escape_string($_POST['password']);
        $_POST['rememberMe'] = (int)$_POST['rememberMe'];

        $row = mysql_fetch_assoc(mysql_query("SELECT * FROM cms_members WHERE email='{$_POST['email']}' AND password='".md5($_POST['password'])."'"));

        if($row['email']) {
            $_SESSION['memberID'] = $row['memberID'];
            $_SESSION['email'] = $row['email'];     
            setcookie('cmsRemember',$_POST['rememberMe']);
        }
        else $err[]='&lt;strong&gt;Error:&lt;/strong&gt; The email and/or password you have entered is invalid.';
    }

    if($err) {
        $_SESSION['msg']['login-err'] = implode('&lt;br /&gt;',$err);
        header("Location: index.php");
        exit;
    }
    else {
        header("Location: loggedIn.php");
    }
}
else {
}

$script = '';
</code></pre>

<p>Javascript:</p>

<pre><code>(function($){

    //closeDOMWindow
    $.fn.closeDOMWindow = function(settings){

        if(!settings){settings={};}

        var run = function(passingThis){

            if(settings.anchoredClassName){
                var $anchorClassName = $('.'+settings.anchoredClassName);
                $anchorClassName.fadeOut('fast',function(){
                    if($.fn.draggable){
                        $anchorClassName.draggable('destory').trigger("unload").remove();   
                    }else{
                        $anchorClassName.trigger("unload").remove();
                    }
                });
                if(settings.functionCallOnClose){settings.functionCallAfterClose();}
            }else{
                var $DOMWindowOverlay = $('#DOMWindowOverlay');
                var $DOMWindow = $('#DOMWindow');
                $DOMWindowOverlay.fadeOut('fast',function(){
                    $DOMWindowOverlay.trigger('unload').unbind().remove();                                                                    
                });
                $DOMWindow.fadeOut('fast',function(){
                    if($.fn.draggable){
                        $DOMWindow.draggable("destroy").trigger("unload").remove();
                    }else{
                        $DOMWindow.trigger("unload").remove();
                    }
                });

                $(window).unbind('scroll.DOMWindow');
                $(window).unbind('resize.DOMWindow');

                if($.fn.openDOMWindow.isIE6){$('#DOMWindowIE6FixIframe').remove();}
                if(settings.functionCallOnClose){settings.functionCallAfterClose();}
            }   
        };

        if(settings.eventType){//if used with $().
            return this.each(function(index){
                $(this).bind(settings.eventType, function(){
                    run(this);
                    return false;
                });
            });
        }else{//else called as $.function
            run();
        }

    };

    //allow for public call, pass settings
    $.closeDOMWindow = function(s){$.fn.closeDOMWindow(s);};

    //openDOMWindow
    $.fn.openDOMWindow = function(instanceSettings){    

        var shortcut =  $.fn.openDOMWindow;

        //default settings combined with callerSettings////////////////////////////////////////////////////////////////////////

        shortcut.defaultsSettings = {
            anchoredClassName:'',
            anchoredSelector:'',
            borderColor:'#FFFFFF',
            borderSize:'0',
            draggable:0,
            eventType:'click', //click, blur, change, dblclick, error, focus, load, mousedown, mouseout, mouseup etc...
            fixedWindowY:20,
            functionCallOnOpen:null,
            functionCallOnClose:null,
            height:340,
            loader:1,
            loaderHeight:32,
            loaderImagePath:'images/icon_loader.gif',
            loaderWidth:32,
            modal:0,
            overlay:1,
            overlayColor:'#000',
            overlayOpacity:'75',
            positionLeft:0,
            positionTop:10,
            positionType:'centered', // centered, anchored, absolute, fixed
            width:280,
            windowBGColor:'',
            windowBGImage:null, // http path
            windowHTTPType:'get',
            windowPadding:0,
            windowSource:'ajax', //inline, ajax, iframe
            windowSourceID:'',
            windowSourceURL:'',
            windowSourceAttrURL:'href'
        };

        var settings = $.extend({}, $.fn.openDOMWindow.defaultsSettings , instanceSettings || {});

        //Public functions

        shortcut.viewPortHeight = function(){ return self.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;};
        shortcut.viewPortWidth = function(){ return self.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;};
        shortcut.scrollOffsetHeight = function(){ return self.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop;};
        shortcut.scrollOffsetWidth = function(){ return self.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft;};
        shortcut.isIE6 = typeof document.body.style.maxHeight === "undefined";

        //Private Functions/////////////////////////////////////////////////////////////////////////////////////////////////////////

        var sizeOverlay = function(){
            var $DOMWindowOverlay = $('#DOMWindowOverlay');
            if(shortcut.isIE6){//if IE 6
                var overlayViewportHeight = document.documentElement.offsetHeight + document.documentElement.scrollTop - 4;
                var overlayViewportWidth = document.documentElement.offsetWidth - 21;
                $DOMWindowOverlay.css({'height':overlayViewportHeight +'px','width':overlayViewportWidth+'px'});
            }else{//else Firefox, safari, opera, IE 7+
                $DOMWindowOverlay.css({'height':'100%','width':'100%','position':'fixed'});
            }   
        };

        var sizeIE6Iframe = function(){
            var overlayViewportHeight = document.documentElement.offsetHeight + document.documentElement.scrollTop - 4;
            var overlayViewportWidth = document.documentElement.offsetWidth - 21;
            $('#DOMWindowIE6FixIframe').css({'height':overlayViewportHeight +'px','width':overlayViewportWidth+'px'});
        };

        var centerDOMWindow = function() {
            var $DOMWindow = $('#DOMWindow');
            if(settings.height + 50 &gt; shortcut.viewPortHeight()){//added 50 to be safe
                $DOMWindow.css('left',Math.round(shortcut.viewPortWidth()/2) + shortcut.scrollOffsetWidth() - Math.round(($DOMWindow.outerWidth())/2));
            }else{
                $DOMWindow.css('left',Math.round(shortcut.viewPortWidth()/2) + shortcut.scrollOffsetWidth() - Math.round(($DOMWindow.outerWidth())/2));
                $DOMWindow.css('top',Math.round(shortcut.viewPortHeight()/2) + shortcut.scrollOffsetHeight() - Math.round(($DOMWindow.outerHeight())/2));
            }
        };

        var centerLoader = function() {
            var $DOMWindowLoader = $('#DOMWindowLoader');
            if(shortcut.isIE6){//if IE 6
                $DOMWindowLoader.css({'left':Math.round(shortcut.viewPortWidth()/2) + shortcut.scrollOffsetWidth() - Math.round(($DOMWindowLoader.innerWidth())/2),'position':'absolute'});
                $DOMWindowLoader.css({'top':Math.round(shortcut.viewPortHeight()/2) + shortcut.scrollOffsetHeight() - Math.round(($DOMWindowLoader.innerHeight())/2),'position':'absolute'});
            }else{
                $DOMWindowLoader.css({'left':'50%','top':'50%','position':'fixed'});
            }

        };

        var fixedDOMWindow = function(){
            var $DOMWindow = $('#DOMWindow');
            $DOMWindow.css('left', settings.positionLeft + shortcut.scrollOffsetWidth());
            $DOMWindow.css('top', + settings.positionTop + shortcut.scrollOffsetHeight());
        };

        var showDOMWindow = function(instance){
            if(arguments[0]){
                $('.'+instance+' #DOMWindowLoader').remove();
                $('.'+instance+' #DOMWindowContent').fadeIn('fast',function(){if(settings.functionCallOnOpen){settings.functionCallOnOpen();}});
                $('.'+instance+ '.closeDOMWindow').click(function(){
                    $.closeDOMWindow(); 
                    return false;
                });
            }else{
                $('#DOMWindowLoader').remove();
                $('#DOMWindow').fadeIn('fast',function(){if(settings.functionCallOnOpen){settings.functionCallOnOpen();}});
                $('#DOMWindow .closeDOMWindow').click(function(){                       
                    $.closeDOMWindow();
                    return false;
                });
            }

        };

        var urlQueryToObject = function(s){
              var query = {};
              s.replace(/b([^&amp;=]*)=([^&amp;=]*)b/g, function (m, a, d) {
                if (typeof query[a] != 'undefined') {
                  query[a] += ',' + d;
                } else {
                  query[a] = d;
                }
              });
              return query;
        };

        //Run Routine ///////////////////////////////////////////////////////////////////////////////////////////////////////////////
        var run = function(passingThis){

            //get values from element clicked, or assume its passed as an option
            settings.windowSourceID = $(passingThis).attr('href') || settings.windowSourceID;
            settings.windowSourceURL = $(passingThis).attr(settings.windowSourceAttrURL) || settings.windowSourceURL;
            settings.windowBGImage = settings.windowBGImage ? 'background-image:url('+settings.windowBGImage+')' : '';
            var urlOnly, urlQueryObject;

            if(settings.positionType == 'anchored'){//anchored DOM window

                var anchoredPositions = $(settings.anchoredSelector).position();
                var anchoredPositionX = anchoredPositions.left + settings.positionLeft;
                var anchoredPositionY = anchoredPositions.top + settings.positionTop;

                $('body').append('&lt;div class="'+settings.anchoredClassName+'" style="'+settings.windowBGImage+';background-repeat:no-repeat;padding:'+settings.windowPadding+'px;overflow:auto;position:absolute;top:'+anchoredPositionY+'px;left:'+anchoredPositionX+'px;height:'+settings.height+'px;width:'+settings.width+'px;background-color:'+settings.windowBGColor+';border:'+settings.borderSize+'px solid '+settings.borderColor+';z-index:10001"&gt;&lt;div id="DOMWindowContent" style="display:none"&gt;&lt;/div&gt;&lt;/div&gt;');        
                //loader
                if(settings.loader &amp;&amp; settings.loaderImagePath !== ''){
                    $('.'+settings.anchoredClassName).append('&lt;div id="DOMWindowLoader" style="width:'+settings.loaderWidth+'px;height:'+settings.loaderHeight+'px;"&gt;&lt;img src="'+settings.loaderImagePath+'" /&gt;&lt;/div&gt;');

                }

                if($.fn.draggable){
                    if(settings.draggable){$('.' + settings.anchoredClassName).draggable({cursor:'move'});}
                }

                switch(settings.windowSource){
                    case 'inline'://////////////////////////////// inline //////////////////////////////////////////
                        $('.' + settings.anchoredClassName+" #DOMWindowContent").append($(settings.windowSourceID).children());
                        $('.' + settings.anchoredClassName).unload(function(){// move elements back when you're finished
                            $('.' + settings.windowSourceID).append( $('.' + settings.anchoredClassName+" #DOMWindowContent").children());              
                        });
                        showDOMWindow(settings.anchoredClassName);
                    break;
                    case 'iframe'://////////////////////////////// iframe //////////////////////////////////////////
                        $('.' + settings.anchoredClassName+" #DOMWindowContent").append('&lt;iframe frameborder="0" hspace="0" wspace="0" src="'+settings.windowSourceURL+'" name="DOMWindowIframe'+Math.round(Math.random()*1000)+'" style="width:100%;height:100%;border:none;background-color:#fff;" class="'+settings.anchoredClassName+'Iframe" &gt;&lt;/iframe&gt;');
                        $('.'+settings.anchoredClassName+'Iframe').load(showDOMWindow(settings.anchoredClassName));
                    break;
                    case 'ajax'://////////////////////////////// ajax //////////////////////////////////////////    
                        if(settings.windowHTTPType == 'post'){

                            if(settings.windowSourceURL.indexOf("?") !== -1){//has a query string
                                urlOnly = settings.windowSourceURL.substr(0, settings.windowSourceURL.indexOf("?"));
                                urlQueryObject = urlQueryToObject(settings.windowSourceURL);
                            }else{
                                urlOnly = settings.windowSourceURL;
                                urlQueryObject = {};
                            }
                            $('.' + settings.anchoredClassName+" #DOMWindowContent").load(urlOnly,urlQueryObject,function(){
                                showDOMWindow(settings.anchoredClassName);
                            });
                        }else{
                            if(settings.windowSourceURL.indexOf("?") == -1){ //no query string, so add one
                                settings.windowSourceURL += '?';
                            }
                            $('.' + settings.anchoredClassName+" #DOMWindowContent").load(
                                settings.windowSourceURL + '&amp;random=' + (new Date().getTime()),function(){
                                showDOMWindow(settings.anchoredClassName);
                            });
                        }
                    break;
                }

            }else{//centered, fixed, absolute DOM window

                //overlay &amp; modal
                if(settings.overlay){
                    $('body').append('&lt;div id="DOMWindowOverlay" style="z-index:10000;display:none;position:absolute;top:0;left:0;background-color:'+settings.overlayColor+';filter:alpha(opacity='+settings.overlayOpacity+');-moz-opacity: 0.'+settings.overlayOpacity+';opacity: 0.'+settings.overlayOpacity+';"&gt;&lt;/div&gt;');
                    if(shortcut.isIE6){//if IE 6
                        $('body').append('&lt;iframe id="DOMWindowIE6FixIframe"  src="blank.html"  style="width:100%;height:100%;z-index:9999;position:absolute;top:0;left:0;filter:alpha(opacity=0);"&gt;&lt;/iframe&gt;');
                        sizeIE6Iframe();
                    }
                    sizeOverlay();
                    var $DOMWindowOverlay = $('#DOMWindowOverlay');
                    $DOMWindowOverlay.fadeIn('fast');
                    if(!settings.modal){$DOMWindowOverlay.click(function(){$.closeDOMWindow();});}
                }

                //loader
                if(settings.loader &amp;&amp; settings.loaderImagePath !== ''){
                    $('body').append('&lt;div id="DOMWindowLoader" style="z-index:10002;width:'+settings.loaderWidth+'px;height:'+settings.loaderHeight+'px;"&gt;&lt;img src="'+settings.loaderImagePath+'" /&gt;&lt;/div&gt;');
                    centerLoader();
                }

                //add DOMwindow
                $('body').append('&lt;div id="DOMWindow" style="background-repeat:no-repeat;'+settings.windowBGImage+';overflow:auto;padding:'+settings.windowPadding+'px;display:none;height:'+settings.height+'px;width:'+settings.width+'px;background-color:'+settings.windowBGColor+';border:'+settings.borderSize+'px solid '+settings.borderColor+'; position:absolute;z-index:10001"&gt;&lt;/div&gt;');

                var $DOMWindow = $('#DOMWindow');
                //centered, absolute, or fixed
                switch(settings.positionType){
                    case 'centered':
                        centerDOMWindow();
                        if(settings.height + 50 &gt; shortcut.viewPortHeight()){//added 50 to be safe
                            $DOMWindow.css('top', (settings.fixedWindowY + shortcut.scrollOffsetHeight()) + 'px');
                        }
                    break;
                    case 'absolute':
                        $DOMWindow.css({'top':(settings.positionTop+shortcut.scrollOffsetHeight())+'px','left':(settings.positionLeft+shortcut.scrollOffsetWidth())+'px'});
                        if($.fn.draggable){
                            if(settings.draggable){$DOMWindow.draggable({cursor:'move'});}
                        }
                    break;
                    case 'fixed':
                        fixedDOMWindow();
                    break;
                    case 'anchoredSingleWindow':
                        var anchoredPositions = $(settings.anchoredSelector).position();
                        var anchoredPositionX = anchoredPositions.left + settings.positionLeft;
                        var anchoredPositionY = anchoredPositions.top + settings.positionTop;
                        $DOMWindow.css({'top':anchoredPositionY + 'px','left':anchoredPositionX+'px'});

                    break;
                }

                $(window).bind('scroll.DOMWindow',function(){
                    if(settings.overlay){sizeOverlay();}
                    if(shortcut.isIE6){sizeIE6Iframe();}
                    if(settings.positionType == 'centered'){centerDOMWindow();}
                    if(settings.positionType == 'fixed'){fixedDOMWindow();}
                });

                $(window).bind('resize.DOMWindow',function(){
                    if(shortcut.isIE6){sizeIE6Iframe();}
                    if(settings.overlay){sizeOverlay();}
                    if(settings.positionType == 'centered'){centerDOMWindow();}
                });

                switch(settings.windowSource){
                    case 'inline'://////////////////////////////// inline //////////////////////////////////////////
                        $DOMWindow.append($(settings.windowSourceID).children());
                        $DOMWindow.unload(function(){// move elements back when you're finished
                            $(settings.windowSourceID).append($DOMWindow.children());               
                        });
                        showDOMWindow();
                    break;
                    case 'iframe'://////////////////////////////// iframe //////////////////////////////////////////
                        $DOMWindow.append('&lt;iframe frameborder="0" hspace="0" wspace="0" src="'+settings.windowSourceURL+'" name="DOMWindowIframe'+Math.round(Math.random()*1000)+'" style="width:100%;height:100%;border:none;background-color:#fff;" id="DOMWindowIframe" &gt;&lt;/iframe&gt;');
                        $('#DOMWindowIframe').load(showDOMWindow());
                    break;
                    case 'ajax'://////////////////////////////// ajax //////////////////////////////////////////
                        if(settings.windowHTTPType == 'post'){

                            if(settings.windowSourceURL.indexOf("?") !== -1){//has a query string
                                urlOnly = settings.windowSourceURL.substr(0, settings.windowSourceURL.indexOf("?"));
                                urlQueryObject = urlQueryToObject(settings.windowSourceURL);
                            }else{
                                urlOnly = settings.windowSourceURL;
                                urlQueryObject = {};
                            }
                            $DOMWindow.load(urlOnly,urlQueryObject,function(){
                                showDOMWindow();
                            });
                        }else{
                            if(settings.windowSourceURL.indexOf("?") == -1){ //no query string, so add one
                                settings.windowSourceURL += '?';
                            }
                            $DOMWindow.load(
                                settings.windowSourceURL + '&amp;random=' + (new Date().getTime()),function(){
                                showDOMWindow();
                            });
                        }
                    break;
                }

            }//end if anchored, or absolute, fixed, centered

        };//end run()

        if(settings.eventType){//if used with $().
            return this.each(function(index){                 
                $(this).bind(settings.eventType,function(){
                    run(this);
                    return false;
                });
            }); 
        }else{//else called as $.function
            run();
        }

    };//end function openDOMWindow

    //allow for public call, pass settings
    $.openDOMWindow = function(s){$.fn.openDOMWindow(s);};

})(jQuery);
</code></pre>

<p>Any help/ideas would be greatly appresiated.</p>

<p>Thanks,
@rrfive</p>
