//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2001 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************

// This utility script file enables dragging a div around the page.
// It has nothing to do (not directly anyhow) to do with Google maps.

function dragStart(event, id) {
//alert(navigator.userAgent);
//alert(browser.version);
  var el;
  var x, y;
  // If an element id was given, find it. Otherwise use the element being clicked on.
  if (id){
    dragObj.elNode = document.getElementById(id);
		dragObj.id=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.
	//alert("a:"+window.event.clientX+"\nb:"+document.documentElement.scrollLeft+"\nc:"+event.clientX+"\nd:"+window.scrollX);
  if ((browser.isIE)||(browser.isOpera)) {
    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;
  }
  // 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)||(browser.isOpera)) {
    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;
  // Get cursor position with respect to the page.
  if ((browser.isIE)||(browser.isOpera)) {
    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;
  }
  // 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)||(browser.isOpera)) {
    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)||(browser.isOpera)) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
	var cookieRoot="";
	cookieRoot+="runnerMap";
	cookieRoot+=dragObj.id.substr(0,1).toUpperCase();
	cookieRoot+=dragObj.id.substr(1);
	var expDate=new Date();
	expDate.setDate(+9999);
	document.cookie=cookieRoot+"Left="+dragObj.elNode.style.left+";expires="+expDate;
	document.cookie=cookieRoot+"Top="+dragObj.elNode.style.top+";expires="+expDate;
}