<!--

/*
IMPORTANT: this library is NO LONGER SUPPORTED.  Please DO NOT email Mike
(or Scott) with questions.  Please direct your questions to a favorite DHTML/
JavaScript newsgroup or BBS.
*/


/******************************************************************************
* dhtmllib.js                                                                 *
*                                                                             *
* Version: 4.0                                                                *
* Last update: November 17, 2001                                              *
*                                                                             *
* Copyright 1999 by Mike Hall                                                 *
* Web address: http://www.brainjar.com                                        *
* Last update: November 30, 1999                                              *
*                                                                             *
* Provides basic functions for DHTML positioned elements which will work on   *
* both Netscape Communicator and Internet Explorer browsers and Opera         *
* (version 4.0 and                                                            *
* up).                                                                        *
*                                                                             *
* Support for Netscape 6 and Mozilla M18 by Scott Andrew LePera               *
* http://www.scottandrew.com                                                  *
* Added: January 11, 2001 Edited with permission.                             *
*                                                                             *
* Copyright 2001 by response gbr                                              *
* Web address: http://www.re-sponse.de                                        *
* Added: June 4, 2001                                                         *
*                                                                             *
* Ergänzt auf Version vom February 26, 2000 von Mike Hall                     *
* - inheritLayer, getVisibility                                               *
* - Image utilities                                                           *
* Weitere Korrekturen und Ergänzungen                                         *
* - Element muß nicht mehr als Objekt, sondern nur als String übergeben wer-  *
*   den                                                                       *
* - getWidth, getHeight funktionieren auch im IE und NS6, falls CSS-Eigen-    *
*   schaft (noch) nicht explizit gesetzt oder "auto"                          *
* - setLeft, setTop, setRight, setBottom ergänzt                              *
* - getWidth, getHeight korrigiert                                            *
* - setWidth, setHeight ergänzt                                               *
* - Image utilities um DOM-Variante ergänzt                                   *
* - getWindowWidth(), getWindowHeight(): isMinNS6-Bedingung überflüssig       *
* - Form utilities ergänzt: getForm(name), findForm(name, document)           *
* - Opera-DOM ergänzt (Opera4/Opera5)                                         *
* - getLayer, getImage, getForm durchsuchen alle Framesets/Frames             *
*   (sowohl auf oberster Ebene eingebette, als auch tiefer verlinkte          *
* - Applet utilities ergänzt: getApplet(name), findApplet(name, document)     *
******************************************************************************/

// Determine browser.

var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 && parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var isMinNS6 = (isMinNS4 && navigator.userAgent.indexOf("Gecko")>=0) ? 1 : 0;
var isNS4 =    isMinNS4 && !isMinNS6;
var isMinIE4 = (document.all) ? 1 : 0;
var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.")) >= 0 ? 1 : 0;
var isMinOP4 = (navigator.appName.indexOf("Opera") >= 0 && parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
var isMinOP5 = (navigator.appName.indexOf("Opera") >= 0 && parseFloat(navigator.appVersion) >= 5) ? 1 : 0;
var isOP4 =    isMinOP4 && !isMinOP5;
var isDOM =    (document.getElementById) ? 1 : 0;
var pxStr =    (navigator.appName.indexOf("Opera") >= 0) ? "" : "px";

//-----------------------------------------------------------------------------
// Layer visibility.
//-----------------------------------------------------------------------------

function hideLayer(layer) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    layer.style.visibility = "hidden";
  if (isNS4)
    layer.visibility = "hide";
}

function showLayer(layer) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    layer.style.visibility = "visible";
  if (isNS4)
    layer.visibility = "show";
}

function inheritLayer(layer) {  // seit Fassung February 26, 2000

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    layer.style.visibility = "inherit";
  if (isNS4)
    layer.visibility = "inherit";
}

function isVisible(layer) {  // nicht mehr enthalten ab Fassung February 26, 2000

  layer = getLayer(layer);

  if ((isMinIE4||isDOM) && layer.style.visibility == "visible")
    return(true);
  if (isNS4 && layer.visibility == "show")
    return(true);
  return(false);
}

function getVisibility(layer) {  // seit Fassung February 26, 2000

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    return layer.style.visibility;
  if (isNS4) {
    if (layer.visibility == "show")
      return "visible";
    if (layer.visibility == "hide")
      return "hidden";
    return layer.visibility;
  }
  return "";
}

//-----------------------------------------------------------------------------
// Layer positioning.
//-----------------------------------------------------------------------------

function moveLayerTo(layer, x, y) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM) {
    layer.style.left = x + pxStr;
    layer.style.top  = y + pxStr;
  }
  if (isNS4)
    layer.moveTo(x, y);
}

function moveLayerBy(layer, dx, dy) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM) {
    layer.style.left = (getLeft(layer.id) + dx) + pxStr;
    layer.style.top  = (getTop(layer.id) + dy) + pxStr;
  }
  if (isNS4)
    layer.moveBy(dx, dy);
}

function getLeft(layer) {

  layer = getLayer(layer);

  if (isDOM&&!isOP4) {
    if (layer.style.left)
      return(parseInt(layer.style.left));
    else
      return(layer.offsetLeft);
    }
  if (isMinIE4||isOP4) {
    if (layer.style.pixelLeft != null)
      return(layer.style.pixelLeft);
    else
      return(layer.style.offsetLeft);
  }
  if (isNS4)
    return(layer.left);
  return(-1);
}

function getTop(layer) {

  layer = getLayer(layer);

  if (isDOM&&!isOP4) {
    if (layer.style.top)
      return(parseInt(layer.style.top));
    else
      return(layer.offsetTop);
  }
  if (isMinIE4||isOP4) {
    if (layer.style.pixelTop != null)
      return(layer.style.pixelTop);
    else
      return(layer.style.offsetTop);
  }
  if (isNS4)
    return(layer.top);
  return(-1);
}

function getRight(layer) {
  return(getLeft(layer) + getWidth(layer));
}

function getBottom(layer) {
  return(getTop(layer) + getHeight(layer));
}

function setLeft(layer, x) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM)
    layer.style.left = x + pxStr;
  if (isMinIE4)
    layer.style.pixelLeft = x;
  if (isNS4)
    layer.left = x;
}

function setTop(layer, y) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM)
    layer.style.top = y + pxStr;
  if (isMinIE4)
    layer.style.pixelTop = y;
  if (isNS4)
    layer.top = y;
}

function setRight(layer, x) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM)
    layer.style.left = x - getWidth(layer) + pxStr;
  if (isMinIE4)
    layer.style.pixelLeft = x - getWidth(layer);
  if (isNS4)
    layer.left = x - getWidth(layer);
  return(-1);
}

function setBottom(layer, y) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM)
    layer.style.top = y - getHeight(layer) + pxStr;
  if (isMinIE4)
    layer.style.pixelTop = y - getHeight(layer);
  if (isNS4)
    layer.top = y - getHeight(layer);
  return(-1);
}

function getPageLeft(layer) {

  layer = getLayer(layer);

  var x;

  if ((isDOM||isMinIE4)&&!isOP4) {
    x = 0;
    while (layer.offsetParent != null) {
      x += layer.offsetLeft;
      layer = layer.offsetParent;
    }
    x += layer.offsetLeft;
    return x;
  }
  if (isNS4)
    return(layer.pageX);
  if (isOP4)
    return 0;
  return(-1);
}

function getPageTop(layer) {

  layer = getLayer(layer);

  var y;

  if ((isMinIE4||isDOM)&&!isOP4) {
    y = 0;
    while (layer.offsetParent != null) {
      y += layer.offsetTop;
      layer = layer.offsetParent;
    }
    y += layer.offsetTop;
    return y;
  }
  if (isNS4)
    return(layer.pageY);
  if (isOP4)
    return 0;
  return(-1);
}

function getWidth(layer) {

  layer = getLayer(layer);

  if (isDOM&&!isOP4) {
    if (layer.style.width && (layer.style.width != "auto"))
      return(parseInt(layer.style.width));
    if (layer.offsetWidth != null)
      return(layer.offsetWidth);  // in Originalfassung layer.clientWidth
    if (layer.style.pixelWidth != null)
      return(layer.style.pixelWidth);
  }
  if (isMinIE4||isOP4) {
    if (layer.style.pixelWidth)
      return(layer.style.pixelWidth);
    else
      return(layer.clientWidth);
  }
  if (isNS4) {
    if (layer.document.width)  // in Originalfassung layer.width
      return(layer.document.width);
    else
      return(layer.clip.right - layer.clip.left);
  }
  return(-1);
}

function getHeight(layer) {
	
  layer = getLayer(layer);

  if (isDOM&&!isOP4) {
    if (layer.style.height && (layer.style.height != "auto"))
      return(parseInt(layer.style.height));
    if (layer.offsetHeight != null)
      return(layer.offsetHeight);  // in Originalfassung layer.clientHeight
    if (layer.style.pixelHeight != null)
      return(layer.style.pixelHeight);
  }
  if (isMinIE4||isOP4) {
    if (layer.style.pixelHeight)
      return(layer.style.pixelHeight);
    else
      return(layer.clientHeight);
  }
  if (isNS4) {
    if (layer.document.height)  // in Originalfassung layer.height
      return(layer.document.height);
    else
      return(layer.clip.bottom - layer.clip.top);
  }
  return(-1);
}

function setWidth(layer, width) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM&&!isMinOP4)
    layer.style.width = width + pxStr;
  if (isMinIE4||isMinOP4)
    layer.style.pixelWidth = width;
  if (isNS4)
    layer.clip.width = width;
}

function setHeight(layer, height) {  // in Originalfassung nicht enthalten

  layer = getLayer(layer);

  if (isDOM&&!isMinOP4)
    layer.style.height = height + pxStr;
  if (isMinIE4||isMinOP4)
    layer.style.pixelHeight = height;
  if (isNS4)
    layer.clip.height = height;
}

function getzIndex(layer) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    return(layer.style.zIndex);
  if (isNS4)
    return(layer.zIndex);
  return(-1);
}

function setzIndex(layer, z) {

  layer = getLayer(layer);

  if (isMinIE4||isDOM)
    layer.style.zIndex = z;
  if (isNS4)
    layer.zIndex = z;
}

//-----------------------------------------------------------------------------
// Layer clipping.
//-----------------------------------------------------------------------------

function clipLayer(layer, clipleft, cliptop, clipright, clipbottom) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    layer.style.clip = 'rect(' + cliptop + 'px ' +  clipright + 'px ' + clipbottom + 'px ' + clipleft +'px)';
  }
  if (isNS4) {
    layer.clip.left   = clipleft;
    layer.clip.top    = cliptop;
    layer.clip.right  = clipright;
    layer.clip.bottom = clipbottom;
  }
}

function getClipLeft(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return 0;
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[3]);
  }
  if (isNS4)
    return(layer.clip.left);
  return(-1);
}

function getClipTop(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return 0;
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[0]);
  }
  if (isNS4)
    return(layer.clip.top);
  return(-1);
}

function getClipRight(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return(getWidth(layer.id));
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[1]);
  }
  if (isNS4)
    return(layer.clip.right);
  return(-1);
}

function getClipBottom(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return(getHeight(layer.id));
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[2]);
  }
  if (isNS4)
    return(layer.clip.bottom);
  return(-1);
}

function getClipWidth(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return(getWidth(layer.id));
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[1] - clip[3]);
  }
  if (isNS4)
    return(layer.clip.width);
  return(-1);
}

function getClipHeight(layer) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4) {
    var str = layer.style.clip;
    if (!str)
      return(getHeight(layer.id));
    var clip = getDOMClipValues(layer.style.clip);
    return(clip[2] - clip[0]);
  }
  if (isNS4)
    return(layer.clip.height);
  return(-1);
}

function getIEClipValues(str) {

  var clip = new Array();
  var i;

  // Parse out the clipping values for IE/NS6 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);
}

getDOMClipValues = getIEClipValues;

//-----------------------------------------------------------------------------
// 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) {

  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))
      dx = getWidth(layer) - cr;
    if (ct + dy < 0)
      dy = -ct;
    else if (cb + dy > getHeight(layer))
      dy = getHeight(layer) - cb;
  }
  clipLayer(layer, cl + dx, ct + dy, cr + dx, cb + dy);
  moveLayerBy(layer, -dx, -dy);
}

//-----------------------------------------------------------------------------
// Layer background.
//-----------------------------------------------------------------------------

function setBgColor(layer, color) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4)
    layer.style.backgroundColor = color;
  if (isMinOP4)
    layer.style.background = color;
  if (isNS4)
    layer.bgColor = color;
}

function setBgImage(layer, src) {

  layer = getLayer(layer);

  if ((isMinIE4||isDOM)&&!isMinOP4)
    layer.style.backgroundImage = "url(" + src + ")";
  if (isNS4)
    layer.background.src = src;

}

//-----------------------------------------------------------------------------
// Layer utilities.
//-----------------------------------------------------------------------------

function getLayer(name) {

  var i, j, k, layer, documentStr;
  var documentDoc = getLayer.arguments[1] ? getLayer.arguments[1] : top;

  if (top.frames.length == 0) {
    if (isDOM)
      return document.getElementById(name);
    if (isMinIE4)
      return eval('document.all.' + name);
    if (isNS4)
      return findLayer(name, document);
    return null;
  }

  else {
    for (j=0; j < documentDoc.frames.length; j++) {
      if (documentDoc.frames[j].length > 0) {
        if ((layer = getLayer(name, documentDoc.frames[j])) != null)
          return layer;
      }
      else {
        if (isDOM)
          if ((layer = documentDoc.frames[j].document.getElementById(name)) != null)
            return layer;
        if (isMinIE4) {
          for (i=0; i < documentDoc.frames[j].document.all.length; i++)
          if (documentDoc.frames[j].document.all[i].id == name)
            return documentDoc.frames[j].document.all[i];
        }
        if (isNS4)
          if ((layer = findLayer(name, documentDoc.frames[j].document)) != null)
            return layer;
      }
    }
  }
  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) {
      layer = findLayer(name, layer.document);
      if (layer != null)
        return layer;
    }
  }
  return null;
}


//-----------------------------------------------------------------------------
// Image utilities.
//-----------------------------------------------------------------------------

function getImage(name) {

  var i, j, k, img;
  var documentDoc = getImage.arguments[1] ? getImage.arguments[1] : top;

  if (top.frames.length == 0) {
    if (isMinIE4||isDOM) {
      for (i = 0; i < document.images.length; i++){
        if (document.images[i].name == name)
          return document.images[i];
      }
    }
    if (isNS4) {
      return findImage(name, document);
    }
    return null;
  }

  else {
    for (j=0; j < documentDoc.frames.length; j++) {
      if (documentDoc.frames[j].length > 0) {
        if ((img = getImage(name, documentDoc.frames[j])) != null)
          return img;
      }
      else {
        if (isMinIE4||isDOM) {
          for (k = 0; k < documentDoc.frames[j].document.images.length; k++) {
            if (documentDoc.frames[j].document.images[k].name == name)
              return documentDoc.frames[j].document.images[k];
          }
        }
        if (isNS4) {
          if ((img = findImage(name, documentDoc.frames[j].document))!= null)
            return img;
        }
      }
    }
  }
  return null;
}

function findImage(name, doc) {

  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) {

  img = getImage(img);

  var x, obj;
  img.container = null;

  if ((isMinIE4||isDOM)&&!isOP4) {
    x = 0;
    obj = img;
    while (obj.offsetParent != null) {
      x += obj.offsetLeft;
      obj = obj.offsetParent;
    }
    x += obj.offsetLeft;
    return x;
  }
  if (isNS4) {
    if (img.container != null)
      return img.container.pageX + img.x;
    else
      return img.x;
  }
  if (isOP4)
    return 0;
  return(-1);
}

function getImagePageTop(img) {

  img = getImage(img);

  var y, obj;

  if ((isMinIE4||isDOM)&&!isOP4) {
    y = 0;
    obj = img;
    while (obj.offsetParent != null) {
      y += obj.offsetTop;
      obj = obj.offsetParent;
    }
    y += obj.offsetTop;
    return y;
  }
  if (isNS4) {
    if (img.container != null)
      return img.container.pageY + img.y;
    else
      return img.y;
  }
  if (isOP4)
    return 0;
  return(-1);
}

//-----------------------------------------------------------------------------
// Form utilities.
//-----------------------------------------------------------------------------

function getForm(name) {

  var i, j, k, l, form;
  var documentDoc = getForm.arguments[1] ? getForm.arguments[1] : top;

  if (top.frames.length == 0) {
    if (isMinIE4||isDOM) {
      for (i = 0; i < document.forms.length; i++){
        if (document.forms[i].name == name)
          return document.forms[i];
      }
    }
    if (isNS4) {
      return findForm(name, document);
    }
    return null;
  }

  else {
    for (j=0; j < documentDoc.frames.length; j++) {
      if (documentDoc.frames[j].length > 0) {
        if ((form = getForm(name, documentDoc.frames[j])) != null)
          return form;
      }
      else {
        if (isMinIE4||isDOM) {
          for (k = 0; k < documentDoc.frames[j].document.forms.length; k++) {
            if (documentDoc.frames[j].document.forms[k].name == name)
              return documentDoc.frames[j].document.forms[k];
          }
        }
        if (isNS4) {
          if ((form = findForm(name, documentDoc.frames[j].document))!= null)
            return form;
        }
      }
    }
  }
  return null;
}

function findForm(name, doc) {

  var i, j, form;

  for (i = 0; i < doc.forms.length; i++) {
    if (doc.forms[i].name == name)
      return doc.forms[i];
  }
  for (i = 0; i < doc.layers.length; i++) {
    if ((form = findForm(name, doc.layers[i].document)) != null) {
      form.container = doc.layers[i];
      return form;
    }
  }
  return null;
}


//-----------------------------------------------------------------------------
// Applet utilities.
//-----------------------------------------------------------------------------

function getApplet(name) {

  var i, j, k, l, applet;
  var documentDoc = getApplet.arguments[1] ? getApplet.arguments[1] : top;

  if (top.frames.length == 0) {
    if (isMinIE4||isDOM) {
      for (i = 0; i < document.applets.length; i++){
        if (document.applets[i].name == name)
          return document.applets[i];
      }
    }
    if (isMinNS4) {
      return findApplet(name, document);
    }
    return null;
  }

  else {
    for (j=0; j < documentDoc.frames.length; j++) {
      if (documentDoc.frames[j].length > 0) {
        if ((applet = getApplet(name, documentDoc.frames[j])) != null)
          return applet;
      }
      else {
        if (isMinIE4||isDOM) {
          for (k = 0; k < documentDoc.frames[j].document.applets.length; k++) {
            if (documentDoc.frames[j].document.applets[k].name == name)
              return documentDoc.frames[j].document.applets[k];
          }
        }
        if (isMinNS4&&!isDOM) {
          if ((applet = findApplet(name, documentDoc.frames[j].document))!= null)
            return applet;
        }
      }
    }
  }
  return null;
}

function findApplet(name, doc) {

  var i, j, applet;

  for (i = 0; i < doc.applets.length; i++) {
    if (doc.applets[i].name == name)
      return doc.applets[i];
  }
  for (i = 0; i < doc.layers.length; i++) {
    if ((applet = findApplet(name, doc.layers[i].document)) != null) {
      applet.container = doc.layers[i];
      return applet;
    }
  }
  return null;
}


//-----------------------------------------------------------------------------
// Window and page properties.
//-----------------------------------------------------------------------------

function getWindowWidth() {

  if (isMinNS4||isMinOP4)
    return(window.innerWidth);
  if (isMinIE4)
    return(document.body.clientWidth);
  return(-1);
}

function getWindowHeight() {

  if (isMinNS4||isMinOP4)
    return(window.innerHeight);
  if (isMinIE4)
    return(document.body.clientHeight);
  return(-1);
}

function getPageWidth() {

  if (isMinNS6)
    return(document.body.offsetWidth);
  if (isNS4)
    return(document.width);
  if (isMinIE4)
    return(document.body.scrollWidth);
  return(-1);
}

function getPageHeight() {

  if (isMinNS6)
    return(document.body.offsetHeight);
  if (isNS4)
    return(document.height);
  if (isMinIE4)
    return(document.body.scrollHeight);
  return(-1);
}

function getPageScrollX() {

  if (isMinNS4||isMinOP4)
    return(window.pageXOffset);
  if (isMinIE4)
    return(document.body.scrollLeft);
  return(-1);
}

function getPageScrollY() {
  if (isMinNS4||isMinOP4)
    return(window.pageYOffset);
  if (isMinIE4)
    return(document.documentElement.scrollTop);
  return(-1);
}

// -->