/*
Licensed Materials - Property of IBM
BI and PM: DOCS
© Copyright IBM Corp. 1999, 2009.
US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.	
*/

var globalLastSyncNode;
var globalMenuObj;
var globalBookName;

window.onload = SetUp;

function findSync()
{
  var ank = parent.content.location.hash;
  var anySearch = parent.content.location.search;
	var nPos = parent.content.location.href.lastIndexOf('/');
	var sFilenameID = (nPos != -1) ? parent.content.location.href.substring( nPos+1, parent.content.location.href.length ) : "";
  var sSyncSuccess = false;

  if( anySearch ) {
  	var searchPos = sFilenameID.lastIndexOf('?');
  	sFilenameID = (searchPos != -1) ? sFilenameID.substring( 0, searchPos ) : sFilenameID;
  }
  if( ank && sFilenameID ) {
    sSyncSuccess = syncMe( sFilenameID );
  }
  else {
    var tempObjList = parent.content.document.getElementsByTagName('body');
    if( tempObjList[0] ) {
      var firstAobj = myFindFirstChildElementOfType( myFindFirstChildElementOfType( tempObjList[0], 'h2' ), 'a' );
      if( firstAobj != null ) {
        if( firstAobj.name ) {
          sSyncSuccess = syncMe( sFilenameID + "#" + firstAobj.name );
        }
      }
      else {
        firstAobj = myFindFirstChildElementOfType( tempObjList[0], 'a' );
        if( firstAobj != null ) {
          var nextSibA = firstAobj.nextSibling;
          if( nextSibA != null ) {
            if( nextSibA.nodeType == 1 && nextSibA.tagName.toLowerCase() == 'a' && nextSibA.name ) {
                sSyncSuccess = syncMe( sFilenameID + "#" + nextSibA.name );
            }
          }
        }
      }
    }
  }

  if( !sSyncSuccess ) {
    // no success yet
    // track down the numeric id and sync to that
  	nPos = ank.lastIndexOf('#');
  	var sNameAnchor = (nPos != -1) ? ank.substring( nPos+1, ank.length ) : "";
  	//check to see if the anchor actually exists otherwise don't bother trying to sync cus it don't exist
  	if ( parent.content.document.getElementsByName( sNameAnchor ).length > 0) {
	    var sNameAnchorParentElementFirstAobj = myFindFirstChildElementOfType( parent.content.document.getElementsByName( sNameAnchor ).item(0).parentNode, 'a' );
	  	var sFilenameOnlyPos = sFilenameID.lastIndexOf('#');
	  	var sFilenameOnly = (sFilenameOnlyPos != -1) ? sFilenameID.substring( 0, sFilenameOnlyPos ) : sFilenameID;
	    if( sNameAnchorParentElementFirstAobj != null ) {
	      sSyncSuccess = syncMe( sFilenameOnly + "#" + sNameAnchorParentElementFirstAobj.name );
		}
	  }
  }
}

function syncMe( objID, noHighlight )
{
  if( document.getElementById( objID ) ) {
    var objShowMeLi = document.getElementById( objID ).parentNode;
    var objShowMeLiRecurseTemp = objShowMeLi;
    if( globalLastSyncNode ) globalLastSyncNode.style.background  = '#FFFFFF';
    do {
      updateAllChildElementsOf(  myFindFirstChildElementOfType( objShowMeLiRecurseTemp, 'ul' ) );
      objShowMeLiRecurseTemp = objShowMeLiRecurseTemp.parentNode.parentNode;
    } while( objShowMeLiRecurseTemp.tagName.toLowerCase() == 'li' )
    objShowMeLiRecurseTemp = objShowMeLi;
    var tempMainMenuObj = document.getElementById( 'maintocnav' );
    do {
      var parentTreeLiElement = objShowMeLiRecurseTemp.parentNode.parentNode;
      if( parentTreeLiElement.tagName.toLowerCase() == 'li' ) {
        var tempIMGNode = myFindFirstChildElementOfType( myFindFirstChildElementOfType( parentTreeLiElement, 'a'), 'img' );
        if( parentTreeLiElement.parentNode == tempMainMenuObj ) {
          tempIMGNode.src = 'common/oMinus_root.gif';
        }
        else {
          if( myFindLastChildElement( parentTreeLiElement.parentNode ) == parentTreeLiElement )
            tempIMGNode.src = 'common/oLminus.gif';
          else
            tempIMGNode.src = 'common/oTminus.gif';
        }
      }
      objShowMeLiRecurseTemp.parentNode.style.display = 'block';
      objShowMeLiRecurseTemp = objShowMeLiRecurseTemp.parentNode.parentNode;
    } while( objShowMeLiRecurseTemp.tagName.toLowerCase() == 'li' )
    if( !noHighlight ) {
      globalLastSyncNode = myFindFirstChildElementOfType( objShowMeLi ).nextSibling; // nextSibling reliable in mozilla?
      if( globalLastSyncNode ) globalLastSyncNode.style.background = '#DDDDFF';  //#CCCCE3
      window.scroll ( 0, ( findPosY(objShowMeLi)-findMiddle() ) );
    }
    savestate();
    return true ;
  }
  else {
    return false ;
  }
}

function vState( state )
{
  var objNested = globalMenuObj.getElementsByTagName('ul');
  for (var i=0; i<objNested.length; i++)
  {
    updateAllChildElementsOf( myFindFirstChildElementOfType( objNested[i].parentNode, 'ul' ) );
    var parentTreeLiElement = objNested[i].parentNode;
    if( parentTreeLiElement.tagName.toLowerCase() == 'li' ) {
      var tempIMGNode = myFindFirstChildElementOfType( myFindFirstChildElementOfType( parentTreeLiElement, 'a'), 'img' );
      if( parentTreeLiElement.parentNode == globalMenuObj ) {
        if( state )
          tempIMGNode.src = 'common/oMinus_root.gif';
        else
          tempIMGNode.src = 'common/oPlus_root.gif';
      }
      else {
        if( myFindLastChildElement( parentTreeLiElement.parentNode ) == parentTreeLiElement ) {
          if( state )
            tempIMGNode.src = 'common/oLminus.gif';
          else
            tempIMGNode.src = 'common/oLplus.gif';
        }
        else {
          if( state )
            tempIMGNode.src = 'common/oTminus.gif';
          else
            tempIMGNode.src = 'common/oTplus.gif';
        }
      }
    }
    if( state ) objNested[i].style.display = 'block';
    else objNested[i].style.display = 'none';
  }
}

function cState(objMenuitem, objEvent, justOpen)
{
    var iKeyCode;
    if (objEvent && objEvent.type == 'keypress')
    {
      if (objEvent.keyCode)
        iKeyCode = objEvent.keyCode;
      else if (objEvent.which)
        iKeyCode = objEvent.which;
      if (iKeyCode != 13 && iKeyCode != 32)
        return true;
    }
    if( globalLastSyncNode ) {
      globalLastSyncNode.style.background='#FFFFFF';
      globalLastSyncNode = null;
    }
    var tempIMGNode = myFindFirstChildElementOfType( myFindFirstChildElementOfType( objMenuitem.parentNode, 'a'), 'img' );
    updateAllChildElementsOf( myFindFirstChildElementOfType( objMenuitem.parentNode, 'ul' ) );
    var tempUlNode = myFindFirstChildElementOfType( objMenuitem.parentNode, 'ul' );
    if (tempUlNode.style.display == 'block') {
      if( ! justOpen ) {
        tempUlNode.style.display = 'none';
        if( objMenuitem.parentNode.parentNode == globalMenuObj )
          tempIMGNode.src = 'common/oPlus_root.gif';
        else {
          if( myFindLastChildElement( objMenuitem.parentNode.parentNode ) == objMenuitem.parentNode )
            tempIMGNode.src = 'common/oLplus.gif';
          else
            tempIMGNode.src = 'common/oTplus.gif';
        }
      }
    }
    else {
      if( objMenuitem.parentNode.parentNode == globalMenuObj )
        tempIMGNode.src = 'common/oMinus_root.gif';
      else {
        if( myFindLastChildElement( objMenuitem.parentNode.parentNode ) == objMenuitem.parentNode )
          tempIMGNode.src = 'common/oLminus.gif';
        else
          tempIMGNode.src = 'common/oTminus.gif';
      }
      tempUlNode.style.display = 'block';
    }
    savestate();
    if( ! objMenuitem.target ) return false;
}

function SetUp()
{
  if (document.getElementById && document.createElement)
  {
    globalMenuObj = document.getElementById('maintocnav');
    var tempObjBody = document.getElementsByTagName('body');
    globalBookName = tempObjBody.id;
    var ldtocImg = document.getElementById('ldtocimg');
    if( globalMenuObj ) globalMenuObj.style.display = 'block';
    if( ldtocImg ) ldtocImg.style.display = 'none';
    updateAllChildElementsOf( globalMenuObj );
  }
  findSync();
 }

function updateAllChildElementsOf( obj ) {
  if( obj ) {
    var isRoot = ( (obj == globalMenuObj) ? true : false );
    var liChildNodes = obj.childNodes;
    for (var i=0; i<liChildNodes.length; i++)
    {
      if( liChildNodes[i].nodeType == 1 ) {
        if( liChildNodes[i].tagName.toLowerCase() == 'li' ) {
          var childULnode = myFindFirstChildElementOfType( liChildNodes[i], 'ul' );
          if( ! childULnode && ! myFindFirstChildElementOfType( liChildNodes[i], 'img' ) ) {
            var imgLinkTopic = document.createElement('img');
            if( myFindLastChildElement( liChildNodes[i].parentNode, 'First' ) == liChildNodes[i] )
              imgLinkTopic.src = isRoot ? 'common/spacer.gif' : 'common/oL.gif';
            else
              imgLinkTopic.src = isRoot ? 'common/spacer.gif' : 'common/oT.gif';
            imgLinkTopic.height = '20';
            imgLinkTopic.width = '16';
            imgLinkTopic.border = '0';

            var initialAnchorElement = myFindFirstChildElementOfType( liChildNodes[i], 'a' );
            initialAnchorElement.onmouseover = function(event){return oMover(this);}
            initialAnchorElement.onmouseout = function(event){return oMout(this);}
            initialAnchorElement.onclick = function(event){ if( globalLastSyncNode ) { globalLastSyncNode.style.background='#FFFFFF'; globalLastSyncNode = null; }; return true; }
            if( ! initialAnchorElement.target ) initialAnchorElement.target = 'content';
            liChildNodes[i].insertBefore( imgLinkTopic, initialAnchorElement );
          }
          else if ( childULnode && ! myFindFirstChildElementOfType( myFindFirstChildElementOfType( liChildNodes[i], 'a' ), 'img' ) ) {
            childULnode.style.display = 'none';
            var imgLinkAction = document.createElement('img');
            if( myFindLastChildElement( liChildNodes[i].parentNode, 'Second' ) == liChildNodes[i] )
              imgLinkAction.src = isRoot ? 'common/oPlus_root.gif' : 'common/oLplus.gif';
            else
              imgLinkAction.src = isRoot ? 'common/oPlus_root.gif' : 'common/oTplus.gif';
            imgLinkAction.height = '20';
            imgLinkAction.width = '26';
            imgLinkAction.border = '0';
            var objAnchor = document.createElement('a');
            objAnchor.href = '#';
            objAnchor.onclick = function(event){return cState(this, event);}
            objAnchor.onkeypress = function(event){return cState(this, event);}
            objAnchor.onmouseover = function(event){return oMover(this.nextSibling);}
            objAnchor.onmouseout = function(event){return oMout(this.nextSibling);}
            objAnchor.appendChild(imgLinkAction);
            var initialAnchorElement = myFindFirstChildElementOfType( liChildNodes[i], 'a' );
            initialAnchorElement.onclick = function(event){return cState(this, event, true);}
            initialAnchorElement.onkeypress = function(event){return cState(this, event, true);}
            initialAnchorElement.onmouseover = function(event){return oMover(this);}
            initialAnchorElement.onmouseout = function(event){return oMout(this);}
            if( ! initialAnchorElement.target ) initialAnchorElement.target = 'content';
            liChildNodes[i].insertBefore( objAnchor, myFindFirstChildElementOfType( liChildNodes[i], 'a' ) );
          }
        }
      }
    }
  }
}

function myFindFirstChildElementOfType( obj, type ) {
  if( obj ) {
    var ulChildNodes = obj.childNodes;
    var ulChildNode = ulChildNodes[0];
    while( ulChildNode ) {
      if( ulChildNode.nodeType == 1 ) {
        if( type && ulChildNode.tagName.toLowerCase() == type ) {
          return ulChildNode;
        }
        else if( !type ) {
          return ulChildNode;
        }
      }
      ulChildNode = ulChildNode.nextSibling;
    }
    return null;
  }
  else return null;
}

function myFindLastChildElement( obj, str ) {
  if( obj ) {
    var gotMatch = false;
    var ulChildNodes = obj.childNodes;
    var ulChildNode = obj.lastChild; // Select last node in list.
    while( ulChildNode ) {
      if( ulChildNode.nodeType == 1 ) {
        return ulChildNode;
      }
      ulChildNode = ulChildNode.previousSibling;
    }
    return null;
  }
  else return null;
}

function findPosY( obj )
{
	var curtop = 0;
	if ( obj.offsetParent )
	{
		while ( obj.offsetParent )
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}

function findMiddle() {
  var myHeight = 0;
  if( typeof( window.innerHeight ) == 'number' ) {
    myWidth = window.innerWidth;
  }
  else if( document.documentElement && document.documentElement.clientHeight ) {
    myHeight = document.documentElement.clientHeight;
  }
  else if( document.body && document.body.clientHeight ) {
    myHeight = document.body.clientHeight;
  }
  else if( window.height ) {
    myHeight = window.height;
  }
  if( myHeight ) return ( myHeight/2 );
  else return 100;
}

function oMout( objHighlight )
{
  if( objHighlight && objHighlight != globalLastSyncNode ) objHighlight.style.background='#FFFFFF';
  return true;
}

function oMover( objHighlight )
{
  window.status='';
  if( objHighlight && objHighlight != globalLastSyncNode ) objHighlight.style.background='#EEEEFF';
  return true;
}

function savestate()
{
	var statestr = '';
  var currentID = '';
  var allULs = globalMenuObj.getElementsByTagName('ul');
  for( var i=0; i<allULs.length; i++ )
 		if( allULs[i].style.display == 'block' ) {
 		  var firstAnchorObj = myFindFirstChildElementOfType( myFindFirstChildElementOfType( allULs[i], 'li' ), 'a' );
      if( firstAnchorObj.id )
        currentID = firstAnchorObj.id;
      else if( firstAnchorObj.nextSibling.id )
        currentID = firstAnchorObj.nextSibling.id;
 			statestr = statestr + currentID + '+';
    }
 	if( statestr.charAt(statestr.length-1) == '+' )
 		statestr = statestr.substring(0,(statestr.length-1));
}