function fileQueueError(fileObj, error_code, message) {
	try {
		if (error_code === SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED) {
			alert("You have attempted to queue too many files.\n" + (message === 0 ? "You have reached the upload limit." : "You may select " + (message > 1 ? "up to " + message + " files." : "one file.")));
			return;
		}

		var progress = new FileProgress(fileObj, this.customSettings.progressTarget);
		progress.SetError();
		progress.ToggleCancel(false);

		switch(error_code) {
			case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
				progress.SetStatus("File is too big.");
				image_name = "toobig.gif";
				this.debug("Error Code: File too big, File name: " + fileObj.name + ", File size: " + fileObj.size + ", Message: " + message);
				break;
			case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
				progress.SetStatus("Cannot upload Zero Byte files.");
				image_name = "zerobyte.gif";
				this.debug("Error Code: Zero byte file, File name: " + fileObj.name + ", File size: " + fileObj.size + ", Message: " + message);
				break;
			case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
				progress.SetStatus("Invalid File Type.");
				this.debug("Error Code: Invalid File Type, File name: " + fileObj.name + ", File size: " + fileObj.size + ", Message: " + message);
				break;
			case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:
				alert("You have selected too many files.  " +  (message > 1 ? "You may only add " +  message + " more files" : "You cannot add any more files."));
				break;
			default:
				if (fileObj !== null) {
					progress.SetStatus("Unhandled Error");
				}
				image_name = "error.gif";
				this.debug("Error Code: " + error_code + ", File name: " + fileObj.name + ", File size: " + fileObj.size + ", Message: " + message);
				break;
		}
		
		AddImage("/img/swfupload/" + image_name);

	} catch (ex) {
        this.debug(ex);
    }
}

function fileDialogComplete(num_files_queued) {
	try {
		if (num_files_queued > 0) {
			this.startUpload();
		}
	} catch (ex) {
		this.debug(ex);
	}
}

function uploadProgress(fileObj, bytesLoaded) {

	try {
		var percent = Math.ceil((bytesLoaded / fileObj.size) * 100)

		var progress = new FileProgress(fileObj,  this.customSettings.upload_target);
		progress.SetProgress(percent);
		if (percent === 100) {
			progress.SetStatus("Creating thumbnail...");
			progress.ToggleCancel(false);
			progress.ToggleCancel(true, this, fileObj.id);
		} else {
			progress.SetStatus("Uploading...");
			progress.ToggleCancel(true, this, fileObj.id);
		}
	} catch (ex) { this.debug(ex); }
}

function uploadSuccess(fileObj, server_data) {
	try {
		// upload.php returns the thumbnail id in the server_data, use that to retrieve the thumbnail for display
		
		AddImage("php/thumbnail.php?id=" + server_data);

		var progress = new FileProgress(fileObj,  this.customSettings.upload_target);

		progress.SetStatus("Thumbnail Created.");
		progress.ToggleCancel(false);


	} catch (ex) { this.debug(ex); }
}

function uploadComplete(fileObj) {
	try {
		/*  I want the next upload to continue automatically so I'll call startUpload here */
		if (this.getStats().files_queued > 0) {
			this.startUpload();
		} else {
			var progress = new FileProgress(fileObj,  this.customSettings.upload_target);
			progress.SetComplete();
			progress.SetStatus("All images received.");
			progress.ToggleCancel(false);
		}
	} catch (ex) { this.debug(ex); }
}

function uploadError(file, errorCode, message) {
	try {
		var progress = new FileProgress(file, this.customSettings.progressTarget);
		progress.setError();
		progress.toggleCancel(false);
		switch (errorCode) {
			case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:
				progress.setStatus("Upload Error: " + message);
				this.debug("Error Code: HTTP Error, File name: " + file.name + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.UPLOAD_FAILED:
				progress.setStatus("Upload Failed.");
				this.debug("Error Code: Upload Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.IO_ERROR:
				progress.setStatus("Server (IO) Error");
				this.debug("Error Code: IO Error, File name: " + file.name + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.SECURITY_ERROR:
				progress.setStatus("Security Error");
				this.debug("Error Code: Security Error, File name: " + file.name + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
				progress.setStatus("Upload limit exceeded.");
				this.debug("Error Code: Upload Limit Exceeded, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.FILE_VALIDATION_FAILED:
				progress.setStatus("Failed Validation.  Upload skipped.");
				this.debug("Error Code: File Validation Failed, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
				break;
			case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
				// If there aren't any files left (they were all cancelled) disable the cancel button
				if (this.getStats().files_queued === 0) {
					document.getElementById(this.customSettings.cancelButtonId).disabled = true;
				}
				progress.setStatus("Cancelled");
				progress.setCancelled();
				break;
			case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
				progress.setStatus("Stopped");
				break;
			default:
				progress.setStatus("Unhandled Error: " + errorCode);
				this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
				break;
		}
	} catch (ex) {
		this.debug(ex);
	}
}


/* ******************************************
 *	FileProgress Object
 *	Control object for displaying file info
 * ****************************************** */

function FileProgress(fileObj, target_id) {
	this.file_progress_id = "divFileProgress";

	this.fileProgressWrapper = document.getElementById(this.file_progress_id);
	if (!this.fileProgressWrapper) {
		this.fileProgressWrapper = document.createElement("div");
		this.fileProgressWrapper.className = "progressWrapper";
		this.fileProgressWrapper.id = this.file_progress_id;

		this.fileProgressElement = document.createElement("div");
		this.fileProgressElement.className = "progressContainer";

		var progressCancel = document.createElement("a");
		progressCancel.className = "progressCancel";
		progressCancel.href = "#";
		progressCancel.style.visibility = "hidden";
		progressCancel.appendChild(document.createTextNode(" "));

		var progressText = document.createElement("div");
		progressText.className = "progressName";
		progressText.appendChild(document.createTextNode(fileObj.name));

		var progressBar = document.createElement("div");
		progressBar.className = "progressBarInProgress";

		var progressStatus = document.createElement("div");
		progressStatus.className = "progressBarStatus";
		progressStatus.innerHTML = " ";

		this.fileProgressElement.appendChild(progressCancel);
		this.fileProgressElement.appendChild(progressText);
		this.fileProgressElement.appendChild(progressStatus);
		this.fileProgressElement.appendChild(progressBar);

		this.fileProgressWrapper.appendChild(this.fileProgressElement);

		document.getElementById(target_id).appendChild(this.fileProgressWrapper);
		FadeIn(this.fileProgressWrapper, 0);

	} else {
		this.fileProgressElement = this.fileProgressWrapper.firstChild;
		this.fileProgressElement.childNodes[1].firstChild.nodeValue = fileObj.name;
	}

	this.height = this.fileProgressWrapper.offsetHeight;

}
FileProgress.prototype.SetProgress = function(percentage) {
	this.fileProgressElement.className = "progressContainer green";
	this.fileProgressElement.childNodes[3].className = "progressBarInProgress";
	this.fileProgressElement.childNodes[3].style.width = percentage + "%";
}
FileProgress.prototype.SetComplete = function() {
	this.fileProgressElement.className = "progressContainer blue";
	this.fileProgressElement.childNodes[3].className = "progressBarComplete";
	this.fileProgressElement.childNodes[3].style.width = "";

}
FileProgress.prototype.SetError = function() {
	this.fileProgressElement.className = "progressContainer red";
	this.fileProgressElement.childNodes[3].className = "progressBarError";
	this.fileProgressElement.childNodes[3].style.width = "";

}
FileProgress.prototype.SetCancelled = function() {
	this.fileProgressElement.className = "progressContainer";
	this.fileProgressElement.childNodes[3].className = "progressBarError";
	this.fileProgressElement.childNodes[3].style.width = "";

}
FileProgress.prototype.SetStatus = function(status) {
	this.fileProgressElement.childNodes[2].innerHTML = status;
}

FileProgress.prototype.ToggleCancel = function(show, upload_obj, file_id) {
	this.fileProgressElement.childNodes[0].style.visibility = show ? "visible" : "hidden";
	if (upload_obj) {
		this.fileProgressElement.childNodes[0].onclick = function() { upload_obj.cancelUpload(); return false; };
	}
}

function AddImage(src) {
	var new_img = document.createElement("img");
	new_img.style.margin = "5px";

	document.getElementById("thumbnails").appendChild(new_img);
	if (new_img.filters) {
		try {
			new_img.filters.item("DXImageTransform.Microsoft.Alpha").opacity = 0;
		} catch (e) {
			// If it is not set initially, the browser will throw an error.  This will set it if it is not set yet.
			new_img.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + 0 + ')';
		}
	} else {
		new_img.style.opacity = 0;
	}

	new_img.onload = function () { FadeIn(new_img, 0); };
	new_img.src = src;
}

function FadeIn(element, opacity) {
	var reduce_opacity_by = 15;
	var rate = 30;	// 15 fps


	if (opacity < 100) {
		opacity += reduce_opacity_by;
		if (opacity > 100) opacity = 100;

		if (element.filters) {
			try {
				element.filters.item("DXImageTransform.Microsoft.Alpha").opacity = opacity;
			} catch (e) {
				// If it is not set initially, the browser will throw an error.  This will set it if it is not set yet.
				element.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + opacity + ')';
			}
		} else {
			element.style.opacity = opacity / 100;
		}
	}

	if (opacity < 100) {
		setTimeout(function() { FadeIn(element, opacity); }, rate);
	}
}