var pX = 0; // x of background position
var flag = false;
var man_flag = false;
function ReturnPos(num) {
	if(num >= 0) {
		return num;
	} else {
		return num * -1;
	}
}
function Rotate() {
	var speed = GetSpeed();
	st = Math.ceil((101-ReturnPos(speed))/50);
	if(flag == true) {
		if(rX <= 0 ) {
			window.setTimeout("PanLeft(st)",speed);
		}
		if(rX > 0 )	{
			window.setTimeout("PanRight(st)",speed);
		}
	}
//document.pano_form.stX.value = st;
//document.pano_form.sp.value = speed;
}

function PanLeft(step) {
	var pano = document.getElementById('pano');
	pX = parseInt(pX) + step;
	var bgpos = pX+"px 0px";
	pano.style.backgroundPosition = bgpos;	

	Rotate();
}
function PanRight(step) {
	var pano = document.getElementById('pano');
	pX = parseInt(pX) - step;
	var bgpos = pX+"px 0px";
	pano.style.backgroundPosition = bgpos;	

	Rotate();
}
function Launch(obj) {
	var osX = findPosX(obj);
	rX = tempX - osX - 302;
	flag = true;
	Rotate();
}
function Stop() {
	flag = false;
}
function GetSpeed() {
	var obj = document.getElementById('mylink');
	osX = findPosX(obj);
	rX = tempX - osX - 302;	
	speed = Math.round((300 - ReturnPos(rX))/3) + 1;
	return speed;	
}

var IE = document.all?true:false  // Detect if the browser is IE or not. // If it is not IE, we assume that the browser is NS.
if (!IE) document.captureEvents(Event.MOUSEMOVE) // If NS -- that is, !IE -- then set up for mouse capture
document.onmousemove = getMouseXY;// Set-up to use getMouseXY function onMouseMove

var tempX = 0 // Temporary variables to hold mouse x-y pos.s
var tempY = 0
var oldX;

function getMouseXY(e) { // Main function to retrieve mouse x-y pos.s
	oldX = tempX; // X coordinates before new capture
	if (IE) { // grab the x-y pos.s if browser is IE
	tempX = event.clientX + document.body.scrollLeft
	tempY = event.clientY + document.body.scrollTop
	} else {  // grab the x-y pos.s if browser is NS
	tempX = e.pageX
	tempY = e.pageY
	}  
	
	if (tempX < 0){tempX = 0}// catch possible negative values in NS4
	if (tempY < 0){tempY = 0}  
	
	ppX = (tempX)+'px';// show the position values in the form named Show in the text fields named MouseX and MouseY
	ppY = (tempY)+'px';

if(man_flag == true) {
	MovePano();
}
	return true
}
function findPosX(obj) {
	var curleft = 0;
	if (obj.offsetParent) {
		while (obj.offsetParent) {
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}
function ManDragStart() {
	flag = false;
	man_flag = true;
}
function ManDragStop() {
alert('hello');
	man_flag = false;
	flag = true;
}
function MovePano() {
	var dif = oldX - tempX;
	df.value = dif;
	pX = dif;
	var bgpos = pX+"px 0px";

	var pano = document.getElementById('pano');
	pano.style.backgroundPosition = bgpos;	

	Rotate();
}
//////////////////////////////////////////////////////////////////
function Browser() {

  var ua, s, i;

  this.isIE    = false;
  this.isNS    = false;
  this.version = null;

  ua = navigator.userAgent;

  s = "MSIE";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isIE = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  s = "Netscape6/";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = parseFloat(ua.substr(i + s.length));
    return;
  }

  // Treat any other "Gecko" browser as NS 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 0;

function dragStart(event, id) {
	flag = false;

	var el;
	var x, y;
	
	// If an element id was given, find it. Otherwise use the element being
	// clicked on.
	
	if (id)
	dragObj.elNode = document.getElementById(id);
	else {
	if (browser.isIE)
	  dragObj.elNode = window.event.srcElement;
	if (browser.isNS)
	  dragObj.elNode = event.target;
	
	// If this is a text node, use its parent element.
	
	if (dragObj.elNode.nodeType == 3)
	  dragObj.elNode = dragObj.elNode.parentNode;
	}
	
	// Get cursor position with respect to the page.
	
	if (browser.isIE) {
	x = window.event.clientX + document.documentElement.scrollLeft
	  + document.body.scrollLeft;
	y = window.event.clientY + document.documentElement.scrollTop
	  + document.body.scrollTop;
	}
	if (browser.isNS) {
	x = event.clientX + window.scrollX;
	y = event.clientY + window.scrollY;
	}
	
	// Save starting positions of cursor and element.
	dragObj.cursorStartX = x;
//	dragObj.cursorStartY = y;
	dragObj.elStartLeft  = pX;
//	dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);
	
	if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
	if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;
	
	// Update element's z-index.
	
	dragObj.elNode.style.zIndex = ++dragObj.zIndex;
	
	// Capture mousemove and mouseup events on the page.
	
	if (browser.isIE) {
	document.attachEvent("onmousemove", dragGo);
	document.attachEvent("onmouseup",   dragStop);
	window.event.cancelBubble = true;
	window.event.returnValue = false;
	}
	if (browser.isNS) {
	document.addEventListener("mousemove", dragGo,   true);
	document.addEventListener("mouseup",   dragStop, true);
	event.preventDefault();
	}
}

function dragGo(event) {
  var x, y;

  // Get cursor position with respect to the page.

  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft
      + document.body.scrollLeft;
    y = window.event.clientY + document.documentElement.scrollTop
      + document.body.scrollTop;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

  // Move drag element by the same amount the cursor has moved.
	oldbgpos = rX + "px 0px";
	newbgpos =  (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px 0px";
  dragObj.elNode.style.backgroundPosition = newbgpos;
	pX = dragObj.elStartLeft + x - dragObj.cursorStartX;
//  dragObj.elNode.style.top  = (dragObj.elStartTop  + y - dragObj.cursorStartY) + "px";

  if (browser.isIE) {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS)
    event.preventDefault();
}

function dragStop(event) {

  // Stop capturing mousemove and mouseup events.

  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
}