<!--
//-----------------------------------------------------------------------------//
// dhtmllib.js                                                                 //
//                                                                             //
// Copyright 1999 by Mike Hall.                                                //
// Web address: http://www.brainjar.com                                        //
// Last update: February 26, 2000.                                             //
//                                                                             //
// Modified: March 25, 2002 by TJC.  Updated to support Netscape 6.	       //
//                                                                             //
// Provides basic functions for DHTML positioned elements which will work on   //
// both Netscape Communicator and Internet Explorer browsers (version 4.0 and  //
// up).                                                                        //
//-----------------------------------------------------------------------------//
    //  Browser type and DOM reference methods
    var isIE4up = 0;
    var isNav4up = 0;
    var isMac = 0;
    var isGecko = 0;
    var layerRef="", styleSwitch=""; leftBracket=""; rightBracket="";
    browserDetect();

//-----------------------------------------------------------------------------
//  Browser Detection
//-----------------------------------------------------------------------------
function browserDetect(){

    // convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    isNav4up = (is_nav && (is_major >= 4));
    isGecko = (agt.indexOf('gecko') != -1);

    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    isIE4up  = (is_ie && (is_major >= 4));

    if( isNav4up ){
        layerRef = 'document.layers';
        styleSwitch = '';
	leftBracket = '[';
	rightBracket = ']';
	isNav4up = 1;
    }
    else if( isIE4up ){
	layerRef = 'document.all';
        styleSwitch = '.style';
	leftBracket = '[';
	rightBracket = ']';
	isIE4up = 1;
    }
    if( isGecko ){
	layerRef = 'document.getElementById';
        styleSwitch = '.style';
	leftBracket = '(';
	rightBracket = ')';
	isNav4up = 0;		// we are gecko, not nav!!
    }

    //  Are we running on a Mac?
    isMac    = (agt.indexOf("mac")!=-1);
}

//-----------------------------------------------------------------------------
// Layer visibility.
//-----------------------------------------------------------------------------

// Layer as name
function hideDiv( layerID ){	// tjc
    var layerName = layerRef + leftBracket + '"' + layerID + '"' + rightBracket;
    if (eval(layerName)){
	eval(layerName + styleSwitch + '.visibility="hidden"');
    }
}
function showDiv( layerID ){	// tjc
    var layerName = layerRef + leftBracket + '"' + layerID + '"' + rightBracket;
    if (eval(layerName)){
	eval(layerName + styleSwitch + '.visibility="visible"');
    }
}

// Layer as object
function hideLayer(layer) {	// tjc
  if (isNav4up)
    layer.visibility = "hide";
  if (isIE4up || isGecko )
    layer.style.visibility = "hidden";
}

function showLayer(layer) {	// tjc
  if (isNav4up)
    layer.visibility = "show";
  if (isIE4up || isGecko )
    layer.style.visibility = "visible";
}

function getVisibility(layer) {	// tjc

  if (isNav4up) {
    if (layer.visibility == "show")
      return "visible";
    if (layer.visibility == "hide")
      return "hidden";
    return layer.visibility;
  }
  else if (isIE4up || isGecko )
    return layer.style.visibility;
  return "";
}

//-----------------------------------------------------------------------------
// Layer positioning.
//-----------------------------------------------------------------------------

function moveLayerTo(layer, x, y) {	// tjc
  if (isNav4up){
    layer.moveTo(x, y-2);	// debug - fudge factor necessary?
  }
  else if (isGecko){
    layer.style.left = x;
    layer.style.top  = y+2;	// debug - fudge factor necessary?
  }
  else if (isIE4up) {
    layer.style.left = x;
    layer.style.top  = y;
  }
}

function moveLayerBy(layer, dx, dy) {	// tjc
  if(isNav4up){
    layer.moveBy(dx, dy);
  }
  else if (isGecko ){
    layer.style.left = getLeft(layer) + dx + "px";
    layer.style.top  = getTop(layer) + dy + "px";
  }
  else if (isIE4up) {
    layer.style.pixelLeft += dx;
    layer.style.pixelTop  += dy;
  }
}

function getLeft(layer) {	// tjc
  if (isNav4up)
    return layer.left;
  else if (isGecko )
    return parseInt(layer.style.left);
  else if (isIE4up)
    return layer.style.pixelLeft;
  return -1;
}

function getTop(layer) {	// tjc
  if (isNav4up)
    return layer.top;
  else if (isGecko )
    return parseInt(layer.style.top);
  else if (isIE4up)
    return layer.style.pixelTop;
  return -1;
}

function getRight(layer) {
  if (isNav4up || isGecko)
    return layer.left + getWidth(layer);
  else if (isIE4up)
    return layer.style.pixelLeft + getWidth(layer);
  return -1;
}

function getBottom(layer) {
  if (isNav4up || isGecko)
    return layer.top + getHeight(layer);
  else if (isIE4up)
    return layer.style.pixelTop + getHeight(layer);
  return -1;
}

function getPageLeft(layer) {

  var x;

  if (isNav4up)
    return layer.pageX;
  else if (isIE4up || isGecko) {
    x = 0;
    while (layer.offsetParent != null) {
      x += layer.offsetLeft;
      layer = layer.offsetParent;
    }
    x += layer.offsetLeft;
    return x;
  }
  return -1;
}

function getPageTop(layer) {

  var y;

  if (isNav4up)
    return layer.pageY;
  else if (isIE4up || isGecko) {
    y = 0;
    while (layer.offsetParent != null) {
      y += layer.offsetTop;
      layer = layer.offsetParent;
    }
    y += layer.offsetTop;
    return y;
  }
  return -1;
}

function getWidth(layer) {	// tjc

  if (isNav4up) {
    if (layer.document.width)
      return layer.document.width;
    else
      return layer.clip.right - layer.clip.left;
  }
  else if (isIE4up || isGecko) {
    if (layer.style.pixelWidth)
      return layer.style.pixelWidth;
    else
      return layer.clientWidth;
  }
  return -1;
}

function getHeight(layer) {	// tjc

  if (isNav4up) {
    if (layer.document.height)
      return layer.document.height;
    else
      return layer.clip.bottom - layer.clip.top;
  }
  else if (isIE4up || isGecko) {
    if (layer.style.pixelHeight)
      return layer.style.pixelHeight;
    else
      return layer.clientHeight;
  }
  return -1;
}

function getzIndex(layer) {

  if (isNav4up)
    return layer.zIndex;
  else if (isIE4up || isGecko)
    return layer.style.zIndex;

  return -1;
}

function setzIndex(layer, z) {

  if (isNav4up)
    layer.zIndex = z;
  else if (isIE4up || isGecko)
    layer.style.zIndex = z;
}

//-----------------------------------------------------------------------------
// Layer clipping.
//-----------------------------------------------------------------------------

function clipLayer(layer, clipleft, cliptop, clipright, clipbottom) {	// tjc
  if (isNav4up) {
    layer.clip.left   = clipleft;
    layer.clip.top    = cliptop;
    layer.clip.right  = clipright;
    layer.clip.bottom = clipbottom;
  }
  else if (isIE4up || isGecko){
    layer.style.clip = 'rect(' + cliptop + ' ' +  clipright + ' ' + clipbottom + ' ' + clipleft +')';
  }
}

function getClipLeft(layer) {	// tjc
  if (isNav4up)
    return layer.clip.left;
  else if (isIE4up || isGecko) {
    var str =  layer.style.clip;
    if (!str)
      return 0;
    var clip = getIntClipValues(layer.style.clip);
    return(clip[3]);
  }
  return -1;
}

function getClipTop(layer) {	// tjc

  if (isNav4up)
    return layer.clip.top;
  else if (isIE4up || isGecko) {
    var str =  layer.style.clip;
    if (!str)
      return 0;
    var clip = getIntClipValues(layer.style.clip);
    return clip[0];
  }
  return -1;
}

function getClipRight(layer) {	// tjc

  if (isNav4up)
    return layer.clip.right;
  else if (isIE4up || isGecko) {
    var str =  layer.style.clip;
    if (!str)
      return layer.style.pixelWidth;
    var clip = getIntClipValues(layer.style.clip);
    return clip[1];
  }
  return -1;
}

function getClipBottom(layer) {	// tjc

  if (isNav4up)
    return layer.clip.bottom;
  else if (isIE4up || isGecko) {
    var str =  layer.style.clip;
    if (!str)
      return layer.style.pixelHeight;
    var clip = getIntClipValues(layer.style.clip);
    return clip[2];
  }
  return -1;
}

function getClipWidth(layer) {

  if (isNav4up)
    return layer.clip.width;
  else if (isIE4up || isGecko) {
    var str = layer.style.clip;
    if (!str)
      return layer.style.pixelWidth;
    var clip = getIntClipValues(layer.style.clip);
    return clip[1] - clip[3];
  }
  return -1;
}

function getClipHeight(layer) {

  if (isNav4up)
    return layer.clip.height;
  else if (isIE4up || isGecko) {
    var str =  layer.style.clip;
    if (!str)
      return layer.style.pixelHeight;
    var clip = getIntClipValues(layer.style.clip);
    return clip[2] - clip[0];
  }
  return -1;
}

function getIntClipValues(str) {	// tjc

  var clip = new Array();
  var i;

  // Parse out the clipping values for IE layers.

  i = str.indexOf("(");
  clip[0] = parseInt(str.substring(i + 1, str.length), 10);
  i = str.indexOf(" ", i + 1);
  clip[1] = parseInt(str.substring(i + 1, str.length), 10);
  i = str.indexOf(" ", i + 1);
  clip[2] = parseInt(str.substring(i + 1, str.length), 10);
  i = str.indexOf(" ", i + 1);
  clip[3] = parseInt(str.substring(i + 1, str.length), 10);
  return clip;
}

//-----------------------------------------------------------------------------
// Layer scrolling.
//-----------------------------------------------------------------------------

function scrollLayerTo(layer, x, y, bound) {

  var dx = getClipLeft(layer) - x;
  var dy = getClipTop(layer) - y;

  scrollLayerBy(layer, -dx, -dy, bound);
}

function scrollLayerBy(layer, dx, dy, bound) {	// tjc

  var cl = getClipLeft(layer);
  var ct = getClipTop(layer);
  var cr = getClipRight(layer);
  var cb = getClipBottom(layer);
  if (bound) {
    if (cl + dx < 0)
      dx = -cl;
    else if (cr + dx > (getWidth(layer)) + 1)
      dx = getWidth(layer) - cr;
    if (ct + dy < 0)
      dy = -ct;
    else if (cb + dy > (getHeight(layer)) + 1)
      dy = getHeight(layer) - cb;
  }
  clipLayer(layer, cl + dx, ct + dy, cr + dx, cb + dy);
  moveLayerBy(layer, -dx, -dy);
}

//-----------------------------------------------------------------------------
// Layer background.
//-----------------------------------------------------------------------------

function setBgColor(layer, color) {

  if (isNav4up)
    layer.bgColor = color;
  else if (isIE4up || isGecko)
    layer.style.backgroundColor = color;
}

function setBgImage(layer, src) {

  if (isNav4up)
    layer.background.src = src;
  else if (isIE4up || isGecko)
    layer.style.backgroundImage = "url(" + src + ")";
}

//-----------------------------------------------------------------------------
// Layer utilities.
//-----------------------------------------------------------------------------

function getLayer(name) {	// tjc
  if (isNav4up)
    return findLayer(name, document);
  else if (isGecko )
    return( document.getElementById(name) );
  else if (isIE4up)
    return eval('document.all.' + name);
  return null;
}

function findLayer(name, doc) {

  var i, layer;

  for (i = 0; i < doc.layers.length; i++) {
    layer = doc.layers[i];
    if (layer.name == name)
      return layer;
    if (layer.document.layers.length > 0)
      if ((layer = findLayer(name, layer.document)) != null)
        return layer;
  }
  return null;
}

//-----------------------------------------------------------------------------
// Image utilities.
//-----------------------------------------------------------------------------

function getImage(name) {	// tjc
  if (isNav4up || isGecko)
    return findImage(name, document);
  if (isIE4up)
    return eval('document.all.' + name);

  return null;
}

function findImage(name, doc) {	// tjc

  var i, img;

  for (i = 0; i < doc.images.length; i++){
    if (doc.images[i].name == name){
      return doc.images[i];
    }
  }
  for (i = 0; i < doc.layers.length; i++){
    if ((img = findImage(name, doc.layers[i].document)) != null) {
      img.container = doc.layers[i];
      return img;
    }
  }
  return null;
}

function getImagePageLeft(img) {	// tjc

  var x, obj;

  if (isNav4up) {
    if (img.container != null)
      return img.container.pageX + img.x;
    else
      return img.x;
  }
  else if (isIE4up || isGecko) {
    x = 0;
    obj = img;
    while (obj.offsetParent != null) {
      x += obj.offsetLeft;
      obj = obj.offsetParent;
    }
    x += obj.offsetLeft;
    return x;
  }
  return -1;
}

function getImagePageTop(img) {	// tjc

  var y, obj;

  if (isNav4up) {
    if (img.container != null)
      return img.container.pageY + img.y;
    else
      return img.y;
  }
  else if (isIE4up || isGecko) {
    y = 0;
    obj = img;
    while (obj.offsetParent != null) {
      y += obj.offsetTop;
      obj = obj.offsetParent;
    }
    y += obj.offsetTop;
    return y;
  }
  return -1;
}

//-----------------------------------------------------------------------------
// Window and page properties.
//-----------------------------------------------------------------------------

function getWindowWidth() {

  if (isNav4up || isGecko)
    return window.innerWidth;
  else if (isIE4up)
    return document.body.clientWidth;
  return -1;
}

function getWindowHeight() {

  if (isNav4up || isGecko)
    return window.innerHeight;
  else if (isIE4up)
    return document.body.clientHeight;
  return -1;
}

function getPageWidth() {

  if (isNav4up || isGecko)
    return document.width;
  else if (isIE4up)
    return document.body.scrollWidth;
  return -1;
}

function getPageHeight() {

  if (isNav4up || isGecko)
    return document.height;
  else if (isIE4up)
    return document.body.scrollHeight;
  return -1;
}

//function getPageScrollX() {
//
  //if (isNav4up)
    //return window.pageXOffset;
  //else if (isIE4up)
    //return document.body.scrollLeft;
  //return -1;
//}

//function getPageScrollY() {
//
  //if (isNav4up)
    //return window.pageYOffset;
  //else if (isIE4up)
    //return document.body.scrollTop;
  //return -1;
//}
//-->