var formChecker = null;
function preLoad() {
	if (!this.support.loading) {
		alert("You need the Flash Player 9.028 or above to use SWFUpload.");
		return false;
	}
}
function loadFailed() {
	alert("Something went wrong while loading SWFUpload. If this were a real application we'd clean up and then give you an alternative");
}
function swfUploadLoaded() {
	/*
	var btnSubmit = document.getElementById("btnSubmit");
	
	btnSubmit.onclick = doSubmit;
	btnSubmit.disabled = true;
	formChecker = window.setInterval(validateForm, 1000);
	
	validateForm();
	*/
	validateForm();
}

function validateForm() 
{
	var isValid = true;
	
	var name = $('swu_name');
	var fam  = $('swu_family');
	var sur  = $('swu_surname');
	var pho  = $('swu_phone');
	var mail = $('swu_mail');
	var file = $('hidFileID');
	var videoname = $('swu_videoname');
	var city = $('swu_city');
	var rule = $('swu_rules');
	
	if (name.value === "" || fam.value === "" || sur.value === "" || pho.value === "" || mail.value === "" || file.value === "" || videoname.value === "" || city.value === "")
		isValid = false;
	
	if(!rule.checked)
		isValid = false;
		
	//document.getElementById('swu_submit').disabled = !isValid ? 'disabled' : '';
	!isValid ? $('uploadSubmit').addClassName('disabled') : $('uploadSubmit').removeClassName('disabled');
}

// Called by the submit button to start the upload
function doSubmit(e) {
	if (formChecker != null) {
		clearInterval(formChecker);
		formChecker = null;
	}
	
	e = e || window.event;
	if (e.stopPropagation) {
		e.stopPropagation();
	}
	e.cancelBubble = true;
	
	try {
		swfu.startUpload();
	} catch (ex) {

	}
	return false;
}

 // Called by the queue complete handler to submit the form
function uploadDone() {		
	validateForm();
}

function fileDialogStart() {
	var txtFileName = document.getElementById("txtFileName");
	txtFileName.value = "";
	this.cancelUpload();
}

function fileQueueError(file, errorCode, message)  {
	try {
		// Handle this error separately because we don't want to create a FileProgress element for it.
		switch (errorCode) {
		case 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;
		case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
			alert("The file you selected is too big.");
			this.debug("Error Code: File too big, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
			alert("The file you selected is empty.  Please select another file.");
			this.debug("Error Code: Zero byte file, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
			alert("The file you choose is not an allowed file type.");
			this.debug("Error Code: Invalid File Type, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		default:
			alert("An error occurred in the upload. Try again later.");
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		}
	} catch (e) {
	}
}

function fileQueued(file) {
	try {
		//var txtFileName = document.getElementById("txtFileName");
		//txtFileName.innerHTML = file.name;
		swfu.startUpload();
	} catch (e) {
	}

}
function fileDialogComplete(numFilesSelected, numFilesQueued) {
	validateForm();
}

function uploadProgress(file, bytesLoaded, bytesTotal) {
	try {
		var percent = Math.ceil((bytesLoaded / bytesTotal) * 100);

		file.id = "singlefile";	// This makes it so FileProgress only makes a single UI element, instead of one for each file
		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setProgress(percent);
		progress.setStatus("Uploading...");
	} catch (e) {
	}
}

function uploadSuccess(file, serverData) {
	try {
		file.id = "singlefile";	// This makes it so FileProgress only makes a single UI element, instead of one for each file
		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setComplete();
		progress.setStatus("Complete.");
		progress.toggleCancel(false);
		
		if (serverData === " ") {
			this.customSettings.upload_successful = false;
		} else {
			this.customSettings.upload_successful = true;
			document.getElementById("hidFileID").value = serverData;
			document.getElementById("txtFileName").innerHTML = file.name;
			var cancelButton = document.getElementById("btnCancel");
			cancelButton.parentNode.removeChild(cancelButton);
		}
		
	} catch (e) {
	}
}

function uploadComplete(file) {
	try {
		if (this.customSettings.upload_successful) {
			this.setButtonDisabled(true);
			uploadDone();
		} else {
			file.id = "singlefile";	// This makes it so FileProgress only makes a single UI element, instead of one for each file
			var progress = new FileProgress(file, this.customSettings.progress_target);
			progress.setError();
			progress.setStatus("Загрузка отменена");
			progress.toggleCancel(false);
			
			var txtFileName = document.getElementById("txtFileName");
			txtFileName.value = "";
			validateForm();

			//alert("There was a problem with the upload.\nThe server did not accept it.");
		}
	} catch (e) {
	}
}

function uploadError(file, errorCode, message) {
	try {
		
		if (errorCode === SWFUpload.UPLOAD_ERROR.FILE_CANCELLED) {
			// Don't show cancelled error boxes
			return;
		}
		
		var txtFileName = document.getElementById("txtFileName");
		txtFileName.value = "";
		validateForm();
		
		// Handle this error separately because we don't want to create a FileProgress element for it.
		switch (errorCode) {
		case SWFUpload.UPLOAD_ERROR.MISSING_UPLOAD_URL:
			alert("There was a configuration error.  You will not be able to upload a resume at this time.");
			this.debug("Error Code: No backend file, File name: " + file.name + ", Message: " + message);
			return;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:
			alert("You may only upload 1 file.");
			this.debug("Error Code: Upload Limit Exceeded, File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		case SWFUpload.UPLOAD_ERROR.FILE_CANCELLED:
		case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
			break;
		default:
			alert("An error occurred in the upload. Try again later.");
			this.debug("Error Code: " + errorCode + ", File name: " + file.name + ", File size: " + file.size + ", Message: " + message);
			return;
		}

		file.id = "singlefile";	// This makes it so FileProgress only makes a single UI element, instead of one for each file
		var progress = new FileProgress(file, this.customSettings.progress_target);
		progress.setError();
		progress.toggleCancel(false);

		switch (errorCode) {
		case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:
			progress.setStatus("Upload Error");
			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.FILE_CANCELLED:
			progress.setStatus("Upload Cancelled");
			this.debug("Error Code: Upload Cancelled, File name: " + file.name + ", Message: " + message);
			break;
		case SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED:
			progress.setStatus("Upload Stopped");
			this.debug("Error Code: Upload Stopped, File name: " + file.name + ", Message: " + message);
			break;
		}
	} catch (ex) {
	}
}