transfers = [];		// keeps track of transfers

transfers.add = function(taskID, fileName, filePath, size, offset, progressRow, viewWhenComplete) {
	this.push(new TransferInfo(taskID, fileName, filePath, size, offset, progressRow, viewWhenComplete));
};
transfers.remove = function(propertyName, propertyValue) {
	var index = this.findIndex(propertyName, propertyValue);
	if (index!==null) {
		this.splice(index, 1);
	}
};
transfers.findIndex = function(propertyName, propertyValue) {
	for (var i in this) {
		if (this[i][propertyName]===propertyValue) {
			return i;
		}
	}
	return null;
};
transfers.find = function(propertyName, propertyValue) {
	var index = this.findIndex(propertyName, propertyValue);
	if (index!==null) {
		return this[index];
	} else {
		return null;
	}
};

function TransferInfo(taskID, fileName, filePath, size, offset, progressRow, viewWhenComplete)
{
	this.taskID = Number(taskID);
	this.fileName = String(fileName);
	this.filePath = String(filePath);
	this.size = Number(size);
	this.offset = Number(offset);
	this.progressRow = progressRow;
	this.viewWhenComplete = viewWhenComplete;
}