jQuery.extend({

    /*createUploadIframe: function(id, uri)
	{
			//create frame
            var frameId = 'jUploadFrame' + id;
            
            if(window.ActiveXObject) {
                var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" style="visibility:hidden;" />');
                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;
            }
            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);
		//set attributes
		$(form).css('position', 'absolute');
		$(form).css('top', '-1200px');
		$(form).css('left', '-1200px');
		$(form).appendTo('body');		
		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 = 'hiddenFrame';
		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 = 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){
            document.getElementById(frameId).attachEvent('onload', uploadCallback);
        }
        else{
            document.getElementById(frameId).addEventListener('load', uploadCallback, false);
        } 		
        return {abort: function () {}};	

    },

    uploadHttpData: function( r, type ) {
        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();
			//alert($('param', data).each(function(){alert($(this).attr('value'));}));
        return data;
    }
})

    function startCallback() 
    {
    	oppdater();
    	return false;
    }
    
    function oppdater() {
    	document.getElementById("tekst1").style.color = '#ccc';
    	document.getElementById("tekst2").style.color = '#ccc';
    	document.forms[0].elements[1].disabled = true;
    	document.getElementById("bilderamme").innerHTML = 'Laster opp...';		
    }
    
    function oppdater2(id) {
    	if (id == '-99') 
    	{
    	 alert(warning1);
    	}
    		
    	if (id == '-1') 
    	{
    		alert(warning2);
    	}
      // Set the textbox labels as disabled after upload
      var txt1 = document.getElementById("tekst1");
    	txt1.className = txt1.className.replace('indexformlabel', 'indexformlabeldisabled');
    	var txt2 = document.getElementById("tekst2");
    	txt2.className = txt2.className.replace('indexupload', 'indexuploaddisabled');
    	
    	// Set the textbox labels as active after upload
    	var txt3 = document.getElementById("tekst3");
    	txt3.className = txt3.className.replace('indexformlabeldisabled', 'indexformlabel');
    	var txt4 = document.getElementById("tekst4");
    	txt4.className = txt4.className.replace('indexformlabeldisabled', 'indexformlabel');
      
      // Set the textboxes as active after upload
    	var txtbox1 = document.getElementById("bbkode");
    	txtbox1.className = txtbox1.className.replace('textfielddisabled', 'textfield');
    	var txtbox2 = document.getElementById("adresse");
    	txtbox2.className = txtbox2.className.replace('textfielddisabled', 'textfield');
    	
    	// Set the textboxes as disabled after upload
    	var txtbox3 = document.getElementById("userfile");
    	txtbox3.className = txtbox3.className.replace('textfield', 'textfielddisabled');
    	txtbox3.disabled = 'true';
    	
    	document.getElementById("subimgbutton").src = 'gfx/upload_disabled.png';
    	document.getElementById("subimgbutton").disabled = 'true';
    	
    	if (navigator.appName == "Microsoft Internet Explorer") {
    		document.getElementById("kopierbbkode").style.background  = '#ffffff';
    		document.getElementById("kopieradresse").style.background  = '#ffffff'; 
    	}
    	
    	document.getElementById("adresse").value = 'http://'+hyperlink+'/'+id;
    	document.getElementById("bbkode").value = '\[URL=http:\/\/'+hyperlink+'\/' + id + '\]\[img\]http:\/\/' + hyperlink + '\/' + id + '.jpg\[\/img]\[\/url\]';
    	document.getElementById("bildeboks").style.visibility = 'visible';
    	document.getElementById("bildeboks").innerHTML = '<a href=\"http:\/\/'+hyperlink+'\/' +id+ ' \" target=\"_blank\" rel=\"lightbox\"><img src=\"/' + id + '.jpg\" alt=\"Åpne bildet i full størrelse\" \/><\/a>';
    	document.getElementById("nylenke").innerHTML = 'Last opp ny...';		
    }	
    	
    function kopierBB() 
    {
    	document.getElementById("bbkode").style.background  = '#c7d887';
    	document.getElementById("tekst4").innerHTML = 'BBKode til bruk på nettfora (kopiert)';
    	Kopiert = document.getElementById("bbkode").createTextRange();
    	Kopiert.execCommand("Copy");
    }
    
    function kopierURL()
    {
    	document.getElementById("adresse").style.background  = '#c7d887';
    	document.getElementById("tekst3").innerHTML = 'URL til bildet du lastet opp (kopiert)';
    	Kopiert = document.getElementById("adresse").createTextRange();
    	Kopiert.execCommand("Copy");
    }

  	function ajaxFileUpload()
  	{
  		$("#loading")
  		.ajaxStart(function(){
  			$(this).show();
  		})
  		.ajaxComplete(function(){
  			$(this).hide();
  		});
  
  		$.ajaxFileUpload
  		(
  			{
  				url:'upload.php',
  				secureuri:false,
  				fileElementId:'userfile',
  				dataType: 'json',
  				success: function (data, status)
  				{
  					if(typeof(data.error) != 'undefined')
  					{
  						if(data.error != '')
  						{
  							oppdater2(data.error);
  						} else {
  							oppdater2(data.msg);
  						}
  					}
  				},
  				error: function (data, status, e)
  				{
  					alert(e);
  				}
  			}
  		)	
  		return false;
  	}