jQuery.extend({
	

    createUploadIframe: function(id, uri)
    {
        //create frame
        var frameId = 'jUploadFrame' + id;
            
        if(window.ActiveXObject) {
            var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
            if(typeof uri== 'boolean'){
                io.src = 'javascript:false';
            }
            else if(typeof uri== 'string'){
                io.src = uri;
            }
        }
        else {
            var io = document.createElement('iframe');
            io.id = frameId;
            io.name = frameId;
            if (jQuery.browser.opera) {
                io.src = 'javascript:void(0);';
            }
        }
        io.style.position = 'absolute';
        io.style.top = '-1000px';
        io.style.left = '-1000px';

        document.body.appendChild(io);

        return io
    },
    createUploadForm: function(id, fileElementId)
    {
        //create form
        var formId = 'jUploadForm' + id;
        var fileId = 'jUploadFile' + id;
        var form = $('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
        var oldElement = $('#' + fileElementId);
        var newElement = $(oldElement).clone();
        $(oldElement).attr('id', fileId);
        $(oldElement).before(newElement);
        $(oldElement).appendTo(form);

        //copy all input fields to post form
        $("input.sendRequired").each(function(){
            $(this).appendTo(form);
        });
		
        //set attributes
        $(form).css('position', 'absolute');
        $(form).css('top', '-1200px');
        $(form).css('left', '-1200px');
        $(form).appendTo('body');
        //alert($(form).html());
        return form;
    },

    ajaxFileUpload: function(s) {
        // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout		
        s = jQuery.extend({}, jQuery.ajaxSettings, s);
        var id = new Date().getTime()        
        var form = jQuery.createUploadForm(id, s.fileElementId);
        var io = jQuery.createUploadIframe(id, s.secureuri);
        var frameId = 'jUploadFrame' + id;
        var formId = 'jUploadForm' + id;
        // Watch for a new set of requests
        if ( s.global && ! jQuery.active++ )
        {
            jQuery.event.trigger( "ajaxStart" );
        }
        var requestDone = false;
        // Create the request object
        var xml = {}   
        if ( s.global )
            jQuery.event.trigger("ajaxSend", [xml, s]);
        // Wait for a response to come back
        var uploadCallback = function(isTimeout)
        {
            var io = document.getElementById(frameId);
            try 
            {
                if(io.contentWindow)
                {
                    xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
                    xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
					 
                }else if(io.contentDocument)
                {
                    xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
                    xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
                }
            }catch(e)
            {
                jQuery.handleError(s, xml, null, e);
            }
            if ( xml || isTimeout == "timeout") 
            {
                requestDone = true;
                var status;
                try {
                    status = isTimeout != "timeout" ? "success" : "error";
                    // Make sure that the request was successful or notmodified
                    if ( status != "error" )
                    {
                        // process the data (runs the xml through httpData regardless of callback)
                        //var data = "X";
                        var data = jQuery.uploadHttpData( xml, s.dataType );
                        // If a local callback was specified, fire it and pass it the data
                        if ( s.success )
                            s.success( data, status );
    
                        // Fire the global callback
                        if ( s.global )
                            jQuery.event.trigger( "ajaxSuccess", [xml, s] );
                    } else
                        jQuery.handleError(s, xml, status);
			
                } catch(e) 
                {
                    status = "error";
                    jQuery.handleError(s, xml, status, e);
                }

                // The request was completed
                if( s.global )
                    jQuery.event.trigger( "ajaxComplete", [xml, s] );

                // Handle the global AJAX counter
                if ( s.global && ! --jQuery.active )
                    jQuery.event.trigger( "ajaxStop" );

                // Process result
                if ( s.complete )
                    s.complete(xml, status);

                jQuery(io).unbind()

                setTimeout(function()
                {
                    try

                    {
                        $(io).remove();
                        $(form).remove();
											
                    } catch(e)
                    {
                        jQuery.handleError(s, xml, null, e);
                    }

                }, 100);

                xml = null;

            }
        }
        // Timeout checker
        if ( s.timeout > 0 ) 
        {
            setTimeout(function(){
                // Check to see if the request is still happening
                if( !requestDone ) uploadCallback( "timeout" );
            }, s.timeout);
        }
        try 
        {
            // var io = $('#' + frameId);
            var form = $('#' + formId);
            $(form).attr('action', s.url);
            $(form).attr('method', 'POST');
            $(form).attr('target', frameId);
            if(form.encoding)
            {
                form.encoding = 'multipart/form-data';				
            }
            else
            {
                form.enctype = 'multipart/form-data';
            }			
            $(form).submit();

        } catch(e) 
        {
            jQuery.handleError(s, xml, null, e);
        }
        if (window.attachEvent) {
            if (jQuery.browser.opera) {
                document.getElementById(frameId).addEventListener('DOMFrameContentLoaded', uploadCallback, false);
            } else {
                document.getElementById(frameId).attachEvent('onload', uploadCallback);
            }
        } else{
            document.getElementById(frameId).addEventListener('load', uploadCallback, false);
        }
        return {
            abort: function () {}
            };

    },

    uploadHttpData: function( r, type ) {
        try {
            var data = !type;
            data = type == "xml" || data ? r.responseXML : r.responseText;
            // If the type is "script", eval it in global context
            if ( type == "script" )
                jQuery.globalEval( data );
            // Get the JavaScript object, if JSON is used.
            if ( type == "json" )
                eval( "data = " + data );
            // evaluate scripts within html
            if ( type == "html" )
                jQuery("<div>").html(data).evalScripts();
            if ( type == "text" )
                data = r.responseText;
            //alert($('param', data).each(function(){alert($(this).attr('value'));}));
            return data;
        } catch(e){
            return r.responseText;
        }
    }
})

$(document).ready(function() {
    $("#contestSubmit").click(function(){
       submitContestForm();
    });
    $("#sendForm").show();
});

function submitContestForm() {
    // test input data
    isValid = true;
    isValidRadio=false;
    // check text fields
    $("input[type=text].sendRequired").each(function(){
         if ($(this).val().length <= 0) {
             isValid=false;
         }
    });
    // check radio buttons
    $("input[type=radio].sendRequired").each(function(){
         if ($(this).attr("checked")) {
             isValidRadio=true;
         }
    });
   if (isValid && isValidRadio) {
        // prepare background post
        $("#xsending").show();
        $("#sendForm").hide();
        var hurl = "/handler/"+$("#contestId").val()+"/index.php";
        $.ajaxFileUpload(
        {
            url:'/handler/'+$("#contestId").val()+'/index.php',
            secureuri:false,
            fileElementId:'videofile',
            dataType: 'text',
            success: function(data){
                $("#xsending").hide();
                if ( data == "1") {
                    $("#xcomplete").show();
                } else {
                    $("#xerror").show();
                }
            //alert(data);
            },
            error: function (data, status, e)
            {
                alert( e );
            }
        })
        return false;
    } else {
        alert("Vyplň všechny požadované údaje!");
    }
}