var browser = new Browser();
var dragObj = new Object();
dragObj.zIndex = 0;
var dragFlag = false;
var dragStartFlag = false;
var oldDrag;
var curDrag;
var orderCellPos = new Array();

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;
	}

	s = "Gecko";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = 6.1;
		return;
	}
}
function orderDragStart(event, id) {
	if((dragStartFlag == false) && (dragFlag == false)) {
		dragStartFlag = true;
		var el;
		var x, y;
		if (id) {
			dragObj.elNode = document.getElementById(id);
			oldDrag = curDrag;
			curDrag = dragObj.elNode;
			if(oldDrag) {
				oldDrag.style.border = "0px solid #888888";
			}
			curDrag.style.border = "1px dotted #888888";
		}else {
			if (browser.isIE)
				dragObj.elNode = window.event.srcElement;
			if (browser.isNS)
				dragObj.elNode = event.target;
			if (dragObj.elNode.nodeType == 3)
				dragObj.elNode = dragObj.elNode.parentNode;
		}

		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;
		}

		dragObj.cursorStartX = x;
		dragObj.cursorStartY = y;
		dragObj.elStartLeft  = parseInt(findPosX(dragObj.elNode), 10);
		dragObj.elStartTop   = parseInt(findPosY(dragObj.elNode),  10);

		if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
		if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;

		dragObj.elNode.style.zIndex = ++dragObj.zIndex;

		if (browser.isIE) {
			document.attachEvent("onmousemove", orderDragGo);
			document.attachEvent("onmouseup",   orderDragStop);
			window.event.cancelBubble = true;
			window.event.returnValue = false;
		}

		if (browser.isNS) {
			document.addEventListener("mousemove", orderDragGo,   true);
			document.addEventListener("mouseup",   orderDragStop, true);
			event.preventDefault();
		}
	}
}

function orderDragGo(event) {
	var x, y;
	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;
	}
	dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
	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 orderDragStop(event) {
	if (browser.isIE) {
		document.detachEvent("onmousemove", orderDragGo);
		document.detachEvent("onmouseup",   orderDragStop);
	}
	if (browser.isNS) {
		document.removeEventListener("mousemove", orderDragGo,   true);
		document.removeEventListener("mouseup",   orderDragStop, true);
	}
	orderFixPos();
	dragStartFlag = false;
}
function orderFix(){
	if(this.divId) {
		var parentObj = document.getElementById(this.divId);
	}else{
		var parentObj = dragObj.elNode.parentNode;
	}
	var parentY = findPosY(parentObj);
	var parentX = findPosX(parentObj);
	var addF = 22;
	var orderCount = 0;
	for(var i=1; i<parentObj.childNodes.length; i++) {
		var newObj = parentObj.childNodes[i];
		if(newObj.id.indexOf('_list_') == -1) {
//		if(i%2 != 0) {
			var newObj = parentObj.childNodes[i];
			newObj.style.position = 'absolute';
			newObj.style.top = parseInt(parentY + addF) + "px";
			newObj.style.left = parentX + "px";
			addF += 22;
			orderCount++;
			if(!this.divId) {
				var tableName = newObj.id.substr(0, newObj.id.lastIndexOf('_'));
				var recordId = newObj.id.substr(parseInt(newObj.id.lastIndexOf('_'),10) + 1, newObj.id.length);
				
				var ajaxVar = new ajaxVars();
				ajaxVar.vars['action'] = 'update';
				ajaxVar.vars['table'] = tableName;
				ajaxVar.vars['id'] = recordId;
				ajaxVar.vars['order_no'] = orderCount;
				ajaxVar.dbVars = ['order_no'];
				ajaxVar.gotoFunction = 'empty';
				ajaxVar.AjaxPostSQL();
			}

		}
	}
}
function orderFixPos(){
	var orderCounter = 0;
	for(var i=1; i<dragObj.elNode.parentNode.childNodes.length; i++) {
//		if(i%2 != 0) {
		var newObj = dragObj.elNode.parentNode.childNodes[i];
		if(newObj.id.indexOf('_list_') == -1) {
			var newObj = dragObj.elNode.parentNode.childNodes[i];
			orderCellPos[orderCounter] = [parseInt(findPosY(newObj)), newObj.id];
			orderCounter++;
		}
	}
	cellOrderedPos = sortArr(orderCellPos);
	for(var i=0; i<cellOrderedPos.length; i++) {
		var newObj = document.getElementById(cellOrderedPos[i][1]);
		var newObjList = document.getElementById(cellOrderedPos[i][1].replace(/items/, 'items_list'));
		if(newObj) {
			dragObj.elNode.parentNode.appendChild(newObj);
		}
		if(newObjList) {
			dragObj.elNode.parentNode.appendChild(newObjList);
		}
	}
	orderFix();
}