// JavaScript Document

//레이어 따라다니고
var preview="";
var gobj="";
function attachEvent_(obj, evt, fuc, useCapture) {
  if(!useCapture) useCapture=false;
  if(obj.addEventListener) { // W3C DOM 지원 브라우저
    return obj.addEventListener(evt,fuc,useCapture);
  } else if(obj.attachEvent) { // MSDOM 지원 브라우저
    return obj.attachEvent("on"+evt, fuc);
  } else { // NN4 나 IE5mac 등 비 호환 브라우저
    MyAttachEvent(obj, evt, fuc);
    obj['on'+evt]=function() { MyFireEvent(obj,evt) };
  }
}

function detachEvent_(obj, evt, fuc, useCapture) {
  if(!useCapture) useCapture=false;
  if(obj.removeEventListener) {
    return obj.removeEventListener(evt,fuc,useCapture);
  } else if(obj.detachEvent) {
    return obj.detachEvent("on"+evt, fuc);
  } else {
    MyDetachEvent(obj, evt, fuc);
    obj['on'+evt]=function() { MyFireEvent(obj,evt) };
  }
}

function MyAttachEvent(obj, evt, fuc) {
  if(!obj.myEvents) obj.myEvents= {};
  if(!obj.myEvents[evt]) obj.myEvents[evt]=[];
  var evts = obj.myEvents[evt];
  evts[evts.length]=fuc;
}

function MyFireEvent(obj, evt) {
  if(!obj.myEvents || !obj.myEvents[evt]) return;
  var evts = obj.myEvents[evt];
  for (var i=0;i<len;i++) {
    len=evts.length;
    evts[i]();
  }
}

function previewShow(e, obj, pv) {
  preview=pv;
  gobj=obj;
  attachEvent_(obj, "mousemove", previewMove, false);
  attachEvent_(obj, "mouseout", previewHide, false);
}

function previewMove(e) {
  var hb = document.getElementById(preview);
  if(hb.parentElement) hb.parentElement.style.display="";
  else hb.parentNode.style.display="";
  var evt = e ? e : window.event;
  var posx=0;
  var posy=0;

  if (evt.pageX || evt.pageY) { // pageX/Y 표준 검사
    posx = evt.pageX +8;
    posy = evt.pageY +16;
  } else if (evt.clientX || evt.clientY) { //clientX/Y 표준 검사 Opera
    posx = evt.clientX +15;
    posy = evt.clientY -35;
    if (window.event) { // IE 여부 검사
      posx += document.body.scrollLeft;
      posy += document.body.scrollTop;
     }
  }

  hb.style.left = posx + "px";
  hb.style.top = posy + "px";
}

function previewHide() {
  var hb = document.getElementById(preview);
  if(hb.parentElement) hb.parentElement.style.display="none";
  else hb.parentNode.style.display="none";

  detachEvent_(gobj,"mousemove", previewMove, false);
}


// 우측 배너 플로팅 
function initMoving(target, position, topLimit, btmLimit) {
	if (!target)
		return false;

	var obj = target;
	obj.initTop = position;
	obj.topLimit = topLimit;
	obj.bottomLimit = document.documentElement.scrollHeight - btmLimit;

	obj.style.position = "absolute";
	obj.top = obj.initTop;
	obj.left = obj.initLeft;

	if (typeof(window.pageYOffset) == "number") {
		obj.getTop = function() {
			return window.pageYOffset;
		}
	} else if (typeof(document.documentElement.scrollTop) == "number") {
		obj.getTop = function() {
			return document.documentElement.scrollTop;
		}
	} else {
		obj.getTop = function() {
			return 0;
		}
	}

	if (self.innerHeight) {
		obj.getHeight = function() {
			return self.innerHeight;
		}
	} else if(document.documentElement.clientHeight) {
		obj.getHeight = function() {
			return document.documentElement.clientHeight;
		}
	} else {
		obj.getHeight = function() {
			return 500;
		}
	}

	obj.move = setInterval(function() {
		if (obj.initTop > 0) {
			pos = obj.getTop() + obj.initTop;
		} else {
			pos = obj.getTop() + obj.getHeight() + obj.initTop;
			//pos = obj.getTop() + obj.getHeight() / 2 - 15;
		}

		if (pos > obj.bottomLimit)
			pos = obj.bottomLimit;
		if (pos < obj.topLimit)
			pos = obj.topLimit;

		interval = obj.top - pos;
		obj.top = obj.top - interval / 3;
		obj.style.top = obj.top + "px";
	}, 30)
}