var div;
var iframe;
// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 10;

function dragStart(event, tmp_div, tmp_iframe) {

  var el;
  var x, y;

	div = tmp_div;
	iframe = tmp_iframe;

  // If an element id was given, find it. Otherwise use the element being
  // clicked on.

  if (div)
    dragObj.elNode = document.getElementById(div);
  else {
    if (browser.isIE)
      dragObj.elNode = window.event.srcElement;
    if ((browser.isNS)&&(!browser.isIE))
      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)&&(!browser.isIE)) {
    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  = 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;

  // 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)&&(!browser.isIE)) {
    document.addEventListener("mousemove", dragGo,   true);
    document.addEventListener("mouseup",   dragStop, true);
    event.preventDefault();
  }
    
  if ((!browser.isOPERA)&&(browser.isIE)) {
	copyDivPosToIFramePos();
  }
}

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)&&(!browser.isIE)) {
    x = event.clientX + window.scrollX;
    y = event.clientY + window.scrollY;
  }

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

  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)&&(!browser.isIE)) {
    event.preventDefault();
  }
  if ((!browser.isOPERA)&&(browser.isIE)) {
		copyDivPosToIFramePos();
  }
}

function dragStop(event) {

  // Stop capturing mousemove and mouseup events.

  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if ((browser.isNS)&&(!browser.isIE)) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
  SetCookie(div+"_left", dragObj.elNode.style.left);
  SetCookie(div+"_top", dragObj.elNode.style.top);
}

function copyDivPosToIFramePos(tmp_div, tmp_iframe) {
	if((!div)||(tmp_div))
		div = tmp_div;
	if((!iframe)||(tmp_iframe))
		iframe = tmp_iframe;
		
	var DivRef = document.getElementById(div);
	var IfrRef = document.getElementById(iframe);

	//DivRef.style.display = "block";
	if ((!browser.isOPERA)&&(browser.isIE)) {
		IfrRef.style.display = DivRef.style.display;
	}
	IfrRef.style.width = DivRef.offsetWidth;
	IfrRef.style.height = DivRef.offsetHeight;

	//alert(tmp_div+' width='+DivRef.offsetWidth+' height='+DivRef.offsetHeight+' top='+DivRef.style.top+' left='+DivRef.style.left);
	
	IfrRef.style.top = DivRef.style.top;
	IfrRef.style.left = DivRef.style.left;
	
	IfrRef.style.zIndex = DivRef.style.zIndex;
}

function copyDivPosToDivPos(div_1, div_2) {
		
	var Div1Ref = document.getElementById(div_1);
	var Div2Ref = document.getElementById(div_2);
	
	offsetwidth = Div1Ref.offsetWidth;
	offsetheight = Div1Ref.offsetHeight;

	Div2Ref.style.width = Div1Ref.offsetWidth; 
	Div2Ref.style.height = Div1Ref.offsetHeight;
	
	Div2Ref.style.left = 2; 
	Div2Ref.style.top =  2; 	
}