///////////////////////////////////////////////////////////////////////
//
// Element Drag & Drop
//
///////////////////////////////////////////////////////////////////////

// Determine browser and version.

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;
var xM, yM;
var MoveObjectID

function dragStart(event, id) {
  //var Lockobj = getFrmObj("lockelements");
  var el;
  MoveObjectID=id

  // 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) {
	xM = window.event.clientX + document.documentElement.scrollLeft
	  + document.body.scrollLeft;
	yM = window.event.clientY + document.documentElement.scrollTop
	  + document.body.scrollTop;
  }
  if (browser.isNS) {
	xM = event.clientX + window.scrollX;
	yM = event.clientY + window.scrollY;
  }

  // Save starting positions of cursor and element.

  dragObj.cursorStartX = xM;
  dragObj.cursorStartY = yM;
  dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
  dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);

  var oTop = getFrmObj('txt' + id + 'Y');
  var oLeft = getFrmObj('txt' + id + 'X');

  if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = parseInt(oLeft.value, 10);
  if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = parseInt(oTop.value,  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 dragStart2(event, id, locked) {
  //var Lockobj = getFrmObj("lockelements");
  var el;
  MoveObjectID=id

  // 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) {
	xM = window.event.clientX + document.documentElement.scrollLeft
	  + document.body.scrollLeft;
	yM = window.event.clientY + document.documentElement.scrollTop
	  + document.body.scrollTop;
  }
  if (browser.isNS) {
	xM = event.clientX + window.scrollX;
	yM = event.clientY + window.scrollY;
  }

  // Save starting positions of cursor and element.

  dragObj.cursorStartX = xM;
  dragObj.cursorStartY = yM;
  dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
  dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);

  var oTop = getFrmObj('txt' + id + 'Y');
  var oLeft = getFrmObj('txt' + id + 'X');
  
  if (oLeft){

  if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = parseInt(oLeft.value, 10);
  if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = parseInt(oTop.value,  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) {

  // Get cursor position with respect to the page.

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

  // Move drag element by the same amount the cursor has moved.

  dragObj.elNode.style.left = (dragObj.elStartLeft + xM - dragObj.cursorStartX) + "px";
  if(MoveObjectID!="mainDiv"){
  	dragObj.elNode.style.top  = (dragObj.elStartTop  + yM - 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);
  }

  if (MoveObjectID!=-1 || MoveObjectID!='' || MoveObjectID!='NaN'){

	var InputTop = getFrmObj('txt' + MoveObjectID + 'Y');
	
	if(InputTop){
		var InVal1=parseInt(dragObj.elNode.style.top)-74;
		if (!isNaN(InVal1)) InputTop.value=parseInt(dragObj.elNode.style.top)-74;
	}
	
	var InputLeft = getFrmObj('txt' + MoveObjectID + 'X');
	
	if (InputLeft){
		var InVal2=parseInt(dragObj.elNode.style.left);
		if (!isNaN(InVal2)) InputLeft.value=parseInt(dragObj.elNode.style.left);
	}

  }
}

document.write("<style>");
document.write(".moveme		{cursor: move;}");
document.write(".handle		{cursor: move;}");
document.write("</style>");