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

// Determine browser and version.

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;
  }

  // Treat any other "Gecko" browser as NS 6.1.

  s = "Gecko";
  if ((i = ua.indexOf(s)) >= 0) {
    this.isNS = true;
    this.version = 6.1;
    return;
  }
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 0;

function dragStart(event, id) {

  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);
  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.

  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;
  }

  // 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) {
    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) {
    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) {
    window.event.cancelBubble = true;
    window.event.returnValue = false;
  }
  if (browser.isNS)
    event.preventDefault();
}

function dragStop(event) {
  // Stop capturing mousemove and mouseup events.
  
  //save current location (left, top) to a cookie
  document.cookie = "scriptBoxLeft=" + dragObj.elNode.style.left;
  document.cookie = "scriptBoxTop=" + dragObj.elNode.style.top;

  if (browser.isIE) {
    document.detachEvent("onmousemove", dragGo);
    document.detachEvent("onmouseup",   dragStop);
  }
  if (browser.isNS) {
    document.removeEventListener("mousemove", dragGo,   true);
    document.removeEventListener("mouseup",   dragStop, true);
  }
}

function getWindowSize(dimension) {
  var myWidth = 0, myHeight = 0; 
  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    myWidth = window.innerWidth;
    myHeight = window.innerHeight;
  } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
    //IE 6+ in 'standards compliant mode'
    myWidth = document.documentElement.clientWidth;
    myHeight = document.documentElement.clientHeight;
  } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
    //IE 4 compatible
    myWidth = document.body.clientWidth;
    myHeight = document.body.clientHeight;
  }
  
  if (dimension == 'width') {
	return myWidth;
  } else{
	return myHeight;
  }
 // window.alert( 'Width = ' + myWidth );
 // window.alert( 'Height = ' + myHeight );
}

function centerObject(id, width, height) {   
    var obj = document.getElementById(id);        
	if (!obj) {
		return;
	}	
	//technically not centering but checks for values stored as cookies 
	//so that the script box can be placed in the desired location for the user	
    var windowWidth = getWindowSize('width');
    //alert('windowWidth: ' + windowWidth);
    var windowHeight = getWindowSize('height');
    //alert('windowHeight: ' + windowHeight);	
	var cookies = getCookies();
	var left = cookies["scriptBoxLeft"];
	var top = cookies["scriptBoxTop"];	    
	
    if(left && top) {
        if(left >= windowWidth) {
            left = (windowWidth - width);
        }
        if(top >= windowHeight) {
            left = (windowHeight - height);
        }
        obj.style.left = left;
        obj.style.top = top;
    } else {        
        var objLeft = obj.style.left;
        var objTop = obj.style.top;
    	
        var newLeft = (windowWidth / 2) - (width / 2);
        var newTop = (windowHeight / 2) - (height / 2);
        obj.style.left = newLeft;
        obj.style.top = newTop;        
	}
}

/******************************************************************************
Author:     Kevin J Donohue
Company:    Morse Best Innovation
Date:       07/18/2007
Description:  New methods based on the above copyrighted code  
******************************************************************************/

/*Similar to centerObject*/
function centerNavBar(id, width) {
    var windowWidth = getWindowSize('width');    
    var obj = document.getElementById(id);
    
    if(!obj) {
        return;
    }
    var objLeft = obj.style.left; 
    var newLeft = (windowWidth/2) - (width/2);    
    obj.style.left = newLeft;  
    obj.style.visibility = 'visible';
}

function getCookies() {
	var cookies = [];
	if (document.cookie != '') {
		var split = document.cookie.split('; ');
		for(var i=0; i<split.length; i++) {
			var pairs = split[i];
			var tmp = pairs.split('=');
			cookies[tmp[0]] = tmp[1];
		}
	}
	return cookies;
}