function addTask() 
{
	if (document.forms[0].newtask.value == "")
		window.alert("You must enter a value in the New Task field.");
	else {
		if (document.forms[0].tasks.options[0].value == "tasks")
				document.forms[0].tasks.options[0] = null;
		var newTask = new Option();
		newTask.value = document.forms[0].newtask.value;
		newTask.text= document.forms[0].newtask.value;
		var numTasks = document.forms[0].tasks.options.length;
		document.forms[0].tasks.options[numTasks] = newTask;
		document.forms[0].newtask.value = "";
	}
}

function deleteTask() 
{
	var selectedTask = 0;
	var taskSelected = false;
	while (selectedTask < document.forms[0].tasks.length) {
		if (document.forms[0].tasks.options[selectedTask].selected == true) {
		taskSelected = true;
		break;
		}
		++selectedTask;
	}
	if (taskSelected == true)
		document.forms[0].tasks.options[selectedTask] = null;
	else
		window.alert("You must select a task in the list.");
}

function ascendingSort() 
{
	var newTasks = new Array();
	for (var i =0; i < document.forms[0].tasks.length; ++i) {
		newTasks[i] = document.forms[0].tasks.options[i].value;
	}
	newTasks.sort();
	for (var j =0; j < document.forms[0].tasks.length; ++j) {
		document.forms[0].tasks.options[j].value = newTasks[j];
		document.forms[0].tasks.options[j].text = newTasks[j];
	}
}

function descendingSort() 
{
	var newTasks = new Array();
	for (var i =0; i < document.forms[0].tasks.length; ++i) {
		newTasks[i] = document.forms[0].tasks.options[i].value;
	}
	newTasks.sort();
	newTasks.reverse();
	for (var j =0; j < document.forms[0].tasks.length; ++j) {
		document.forms[0].tasks.options[j].value = newTasks[j];
		document.forms[0].tasks.options[j].text = newTasks[j];
	}
}