var jsAreaShowTime = 1000;
var JsAreas = new Object();

document.onmousemove = mouseMove;

function mouseMove(ev){
	ev           = ev || window.event;
	var mousePos = mouseCoords(ev);
}

function mouseCoords(ev){
	if(ev.pageX || ev.pageY){
		return {x:ev.pageX, y:ev.pageY};
	}
	return {
		x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
		y:ev.clientY + document.body.scrollTop  - document.body.clientTop
	};
}

document.onmouseup = mouseUp;
var dragObject     = null;

function makeClickable(object){
	object.onmousedown = function(){
		dragObject = this;
	}
}

function mouseUp(ev){
	dragObject = null;
}

document.onmousemove = mouseMove;
document.onmouseup   = mouseUp;

var dragObject  = null;
var mouseOffset = null;

function getMouseOffset(target, ev){
	ev = ev || window.event;

	var docPos    = getPosition(target);
	var mousePos  = mouseCoords(ev);
	return {x:mousePos.x - docPos.x, y:mousePos.y - docPos.y};
}

function getPosition(e){
	var left = 0;
	var top  = 0;

	while (e.offsetParent){
		left += e.offsetLeft;
		top  += e.offsetTop;
		e     = e.offsetParent;
	}

	left += e.offsetLeft;
	top  += e.offsetTop;

	return {x:left, y:top};
}

function mouseMove(ev){
	ev           = ev || window.event;
	var mousePos = mouseCoords(ev);

	if(dragObject){
		dragObject.style.position = 'absolute';
		dragObject.style.top      = mousePos.y - mouseOffset.y;
		dragObject.style.left     = mousePos.x - mouseOffset.x;

		return false;
	}
}
function mouseUp(){
	dragObject = null;
}

function makeDraggable(item){
	if(!item) return;
	item.onmousedown = function(ev){
		dragObject  = this;
		mouseOffset = getMouseOffset(this, ev);
		return false;
	}
}


function GetArea(id)
{
	return JsAreas[id] ? JsAreas[id] : (JsAreas[id] = new JsArea(id));
}

// A single popup window
function JsArea(id)
{
	this.AreaId = id;
}

// Function to return the DIV Layer
JsArea.prototype.ContentArea= function()
{
	var divArea = document.getElementById(this.AreaId);
	if (divArea != null)
	{
		return divArea;
	}
	return null;
}

var activeAreaId = null;

// Function to show the DIV Layer
JsArea.prototype.popareaup = function(x, y)
{
if (activeAreaId != null)	
	jsAreaClose(activeAreaId);
	
	var divLayer = this.ContentArea();
	divLayer.style.position = 'absolute';
	divLayer.style.display = 'block';
	divLayer.style.left = x;
	divLayer.style.top = y;
	divLayer.onmouseover= JsAreaMouseOver;
	divLayer.onmouseout = jsAreaMouseOut;
	activeAreaId = this.AreaId;
	
	return false;
}

// Function to hide the DIV Layer
JsArea.prototype.hide = function()
{
	var divLayer = this.ContentArea();
	if (divLayer != null)
		divLayer.style.display = 'none';
		
	return false;
}

// Function to be called
// by Web forms to show the Popup Window
function PopupArea(e, areaId)
{
    var mousePos  = getPosition(e);
	posx = mousePos.x;
	posy = mousePos.y;
	
	var area = GetArea(areaId);
	area.popareaup(posx, posy);
}
function PopupAreaNew(areaId)
{
	posx = 200;
	posy = 325;
	var area = GetArea(areaId);
	area.popareaup(posx, posy);
}

// Function to hide the DIV Layer
function jsAreaClose(areaId)
{
	GetArea(areaId).hide();
	activeAreaId = divHangTimer = null;	
}

var divHangTimer = null;

// Function to keep the Div Layer
// showing for a "period" of time
// after that period, if the mouse
// has been outside the DIV Layer, 
// it will be hidden automatically
function KeepArea(areaId)
{
	if (areaId == activeAreaId && divHangTimer != null)
	{
		clearTimeout(divHangTimer);
		divHangTimer = null;
	}
}

// Function to release the DIV Layer
function RelArea(areaId)
{
	if (areaId == activeAreaId && divHangTimer == null)
		divHangTimer = setTimeout('jsAreaClose(\'' + areaId + '\')', jsAreaShowTime);
}

// Function fired when mouse is over the 
// DIV Layer, used to keep the layer showing
function JsAreaMouseOver(e)
{
	if (!e) 
		var e = window.event;
	var targ = e.target ? e.target : e.srcElement;
	KeepArea(activeAreaId);
}

// Function that fires when mouse is out of
// the scope of the DIV Layer
function jsAreaMouseOut(e)
{
	if (!e) 
		var e = window.event;
	var targ = e.relatedTarget ? e.relatedTarget : e.toElement;
	var activeAreaView = document.getElementById(activeAreaId);
	//if (activeAreaView != null && !jsAreaContains(activeAreaView, targ))
	//	RelArea(activeAreaId);
}
function jsAreaContains(parent, child)
{
	while(child)
		if (parent == child) return true;
		else 
			child = child.parentNode;
		
		return false;
}