/*
 * xbDOM.js
 * $Revision: 1.1 $ $Date: 2006/01/26 23:08:57 $
 */

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Netscape code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s): Bob Clary <bclary@netscape.com>
 *
 * ***** END LICENSE BLOCK ***** */

function xbToInt(s) {
  var i = parseInt(s, 10);
  if (isNaN(i)) {
    i = 0;
  }

  return i;
}

function xbGetWindowWidth(windowRef) {
  var width = 0;
  if (!windowRef) {
    windowRef = window;
  }
  if (typeof(windowRef.innerWidth) == 'number') {
    width = windowRef.innerWidth;
  } else if (windowRef.document.body && typeof(windowRef.document.body.clientWidth) == 'number') {
    width = windowRef.document.body.clientWidth;  
  }
    
  return width;
}

function xbGetWindowHeight(windowRef) {
  var height = 0;
  if (!windowRef) {
    windowRef = window;
  }

  if (typeof(windowRef.innerWidth) == 'number') {
    height = windowRef.innerHeight;
  } else if (windowRef.document.body && typeof(windowRef.document.body.clientWidth) == 'number') {
    height = windowRef.document.body.clientHeight;    
  }
  return height;
}

function xbGetElementsByNameAndType(name, type, windowRef) {
  if (!windowRef) {
    windowRef = window;
  }
  var elmlist = new Array();
  xbFindElementsByNameAndType(windowRef.document, name, type, elmlist);

  return elmlist;
}

function xbFindElementsByNameAndType(doc, name, type, elmlist) {
  var i;
  var subdoc;
  
  for (i = 0; i < doc[type].length; ++i) {
    if (doc[type][i].name && name == doc[type][i].name) {
      elmlist[elmlist.length] = doc[type][i];
    }
  }

  if (doc.layers) {
    for (i = 0; i < doc.layers.length; ++i) {
      subdoc = doc.layers[i].document;
      xbFindElementsByNameAndType(subdoc, name, type, elmlist);
    }
  }
}

if (document.layers) {
  nav4FindLayer = function (doc, id) {
    var i;
    var subdoc;
    var obj;
    
    for (i = 0; i < doc.layers.length; ++i) {
      if (doc.layers[i].id && id == doc.layers[i].id) {
        return doc.layers[i];
      }
      subdoc = doc.layers[i].document;
      obj    = nav4FindLayer(subdoc, id);
      if (obj != null) {
        return obj;
      }
    }
    return null;
  }

  nav4FindElementsByName = function (doc, name, elmlist) {
    var i;
    var j;
    var subdoc;
    
    for (i = 0; i < doc.images.length; ++i) {
      if (doc.images[i].name && name == doc.images[i].name) {
        elmlist[elmlist.length] = doc.images[i];
      }
    }

    for (i = 0; i < doc.forms.length; ++i) {
      for (j = 0; j < doc.forms[i].elements.length; j++) {
        if (doc.forms[i].elements[j].name && name == doc.forms[i].elements[j].name) {
          elmlist[elmlist.length] = doc.forms[i].elements[j];
        }
      }

      if (doc.forms[i].name && name == doc.forms[i].name) {
        elmlist[elmlist.length] = doc.forms[i];
      }
    }

    for (i = 0; i < doc.anchors.length; ++i) {
      if (doc.anchors[i].name && name == doc.anchors[i].name) {
        elmlist[elmlist.length] = doc.anchors[i];
      }
    }

    for (i = 0; i < doc.links.length; ++i) {
      if (doc.links[i].name && name == doc.links[i].name) {
        elmlist[elmlist.length] = doc.links[i];
      }
    }

    for (i = 0; i < doc.applets.length; ++i) {
      if (doc.applets[i].name && name == doc.applets[i].name) {
        elmlist[elmlist.length] = doc.applets[i];
      }
    }

    for (i = 0; i < doc.embeds.length; ++i) {
      if (doc.embeds[i].name && name == doc.embeds[i].name) {
        elmlist[elmlist.length] = doc.embeds[i];
      }
    }

    for (i = 0; i < doc.layers.length; ++i) {
      if (doc.layers[i].name && name == doc.layers[i].name) {
        elmlist[elmlist.length] = doc.layers[i];
      }
        
      subdoc = doc.layers[i].document;
      nav4FindElementsByName(subdoc, name, elmlist);
    }
  }

  xbGetElementById = function (id, windowRef) {
    if (!windowRef) {
      windowRef = window;
    }

    return nav4FindLayer(windowRef.document, id);
  };

  xbGetElementsByName = function (name, windowRef) {
    if (!windowRef) {
      windowRef = window;
	}
    var elmlist = new Array();

    nav4FindElementsByName(windowRef.document, name, elmlist);

    return elmlist;
  };

} else if (document.all) {
  xbGetElementById = function (id, windowRef) { 
    if (!windowRef) {
      windowRef = window; 
    }
    var elm = windowRef.document.all[id]; 
    if (!elm) {
      elm = null; 
    }
    return elm; 
  };

  xbGetElementsByName = function (name, windowRef) {
    if (!windowRef) {
      windowRef = window;
    }

    var i;
    var idnamelist = windowRef.document.all[name];
    var elmlist = new Array();

    if (!idnamelist.length || idnamelist.name == name) {
      if (idnamelist) {
        elmlist[elmlist.length] = idnamelist;
      }
    } else {
      for (i = 0; i < idnamelist.length; i++) {
        if (idnamelist[i].name == name) {
          elmlist[elmlist.length] = idnamelist[i];
        }
      }
    }

    return elmlist;
  }

} else if (document.getElementById) {
  xbGetElementById = function (id, windowRef) { 
    if (!windowRef) {
      windowRef = window; 
    }
    return windowRef.document.getElementById(id); 
  };

  xbGetElementsByName =  function (name, windowRef) { 
    if (!windowRef) {
      windowRef = window; 
    }
    return windowRef.document.getElementsByName(name); 
  };

} else {
  xbGetElementById = function (id, windowRef) { 
    return null; 
  };

  xbGetElementsByName = function (name, windowRef) { 
    return new Array(); 
  };
}

function xbGetPageScrollX(windowRef) {
  if (!windowRef) {
    windowRef = window; 
  }

  if (typeof(windowRef.pageXOffset) == 'number') {
    return windowRef.pageXOffset;
  }

  if (typeof(windowRef.document.body && windowRef.document.body.scrollLeft) == 'number') {
    return windowRef.document.body.scrollLeft;
  }

  return 0;
}

function xbGetPageScrollY(windowRef) {
  if (!windowRef) {
    windowRef = window; 
  }

  if (typeof(windowRef.pageYOffset) == 'number') {
    return windowRef.pageYOffset;
  }

  if (typeof(windowRef.document.body && windowRef.document.body.scrollTop) == 'number') {
    return windowRef.document.body.scrollTop;
  }

  return 0;
}

if (document.layers) {
  xbSetInnerHTML = function (element, str) { 
    element.document.write(str); 
    element.document.close(); 
  };

} else {
  xbSetInnerHTML = function (element, str) { 
    if (typeof(element.innerHTML) != 'undefined') {
      element.innerHTML = str; 
    }
  };
}

// eof: xbDOM.js