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;
  }
}
var browser = new Browser();
var dragObj = new Object();
dragObj.zIndex = 0;
function dragStart(event, id) {
  var el;
  var x, y;
  if (id)
    dragObj.elNode = document.getElementById(id);
  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(dragObj.elNode.style.left, 10);
  dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  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", 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;
  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 dragStop(event) {
  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
}	
var dragRObj = new Object();
dragRObj.zIndex = 0;
function dragResizeStart(event, id, idImg, ajusteX, ajusteY) {
  if(isNaN(ajusteX)) ajusteX = 0;
  if(isNaN(ajusteY)) ajusteY = 0;
  dragRObj.ajusteX = ajusteX;
  dragRObj.ajusteY = ajusteY;
  var x, y;
  if (id){
    dragRObj.elNode = document.getElementById(id);
    dragRObj.divContent = document.getElementById('div'+id);
	dragRObj.img = document.getElementById(idImg);
  }else {
    if (browser.isIE)
      dragRObj.elNode = window.event.srcElement;
    if (browser.isNS)
      dragRObj.elNode = event.target;
    if (dragRObj.elNode.nodeType == 3)
      dragRObj.elNode = dragRObj.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;
  }
  dragRObj.cursorStartX = x;
  dragRObj.cursorStartY = y;
  dragRObj.elStartLeft  = parseInt(dragRObj.elNode.style.left, 10);
  dragRObj.elStartTop   = parseInt(dragRObj.elNode.style.top,  10);
  if (isNaN(dragRObj.elStartLeft)) dragRObj.elStartLeft = 0;
  if (isNaN(dragRObj.elStartTop))  dragRObj.elStartTop  = 0;
if(dragObj.elNode != null)
  dragObj.elNode.style.zIndex = ++dragObj.zIndex;
  if (browser.isIE) {
    document.attachEvent("onmousemove", dragResizeGo);
    document.attachEvent("onmouseup",   dragResizeStop);
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS) {
    document.addEventListener("mousemove", dragResizeGo,   true);
    document.addEventListener("mouseup",   dragResizeStop, true);
    event.preventDefault();
  }
}
function dragResizeGo(event) {
  var x, y;
  if (browser.isIE) {
    x = window.event.clientX + document.documentElement.scrollLeft
      + document.body.scrollLeft  - dragRObj.ajusteX;
    y = window.event.clientY + document.documentElement.scrollTop
      + document.body.scrollTop - dragRObj.ajusteY;
  }
  if (browser.isNS) {
    x = event.clientX + window.scrollX - dragRObj.ajusteX;
    y = event.clientY + window.scrollY - dragRObj.ajusteY;;
  }
  dragRObj.elNode.style.width = (x - parseInt(dragRObj.elNode.style.left)) + "px";
  dragRObj.elNode.style.height  = (y - parseInt(dragRObj.elNode.style.top)) + "px";
  dragRObj.notDragX = false;
  if(parseInt(dragRObj.elNode.style.width)+parseInt(dragRObj.elNode.style.borderLeft)+parseInt(dragRObj.elNode.style.borderRight) <= dragRObj.divContent.offsetWidth){
	  dragRObj.elNode.style.width = dragRObj.divContent.offsetWidth + 'px';
  	  dragRObj.notDragX = true;
  }
  dragRObj.notDragY = false;
  if(parseInt(dragRObj.elNode.style.height) <= dragRObj.divContent.offsetHeight){
	  dragRObj.elNode.style.height = dragRObj.divContent.offsetHeight + 'px';
	  dragRObj.notDragY = true;
  }
  dragRObj.img.style.top = (parseInt(dragRObj.elNode.style.height)-dragRObj.img.offsetHeight)+'px';
  dragRObj.img.style.left = (parseInt(dragRObj.elNode.style.width)-dragRObj.img.offsetWidth)+'px';
  dragRObj.elNode.style.zIndex = dragObj.zIndex;
  parseInt(dragRObj.elNode.style.top)
  if (browser.isIE) {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS)
    event.preventDefault();
}
function dragResizeStop(event) {
  if (browser.isIE) {
    document.detachEvent("onmousemove", dragResizeGo);
    document.detachEvent("onmouseup",   dragResizeStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragResizeGo,   true);
    document.removeEventListener("mouseup",   dragResizeStop, true);
  }
  dragStop(event);
}