// support for toggle sections



// The actual toggle function
var doToggle = function (el) {
  var id = el.getAttribute('id');
  var base = id.match(/(.+):/);
  var vis  = id.match(/hide/);
  var on   = vis ? base[1]+':visible' : base[1]+':hidden';
  var off  = vis ? base[1]+':hidden'  : base[1]+':visible';
  YAHOO.util.Dom.setStyle(on,'display','block');
  YAHOO.util.Dom.setStyle(off,'display','none');	
}

// global toggle function
var doToggleAll = function (vis) {
    var divs = document.getElementsByTagName('div');
    for (var i=0; i<divs.length; i++) {
	var id = divs[i].getAttribute('id') || '';
	if (vis && id.match(/:hidden/)) {
	  YAHOO.util.Dom.setStyle(divs[i],'display','block');
        }
	else if (vis && id.match(/:visible/)) {
	  YAHOO.util.Dom.setStyle(divs[i],'display','none');
        }
        else if (!vis && id.match(/:hidden/)) {
          YAHOO.util.Dom.setStyle(divs[i],'display','none');
        }
        else if (!vis && id.match(/:visible/)) {
          YAHOO.util.Dom.setStyle(divs[i],'display','block');
        }
    }
}

// global toggle default state (if specified) overrides individual toggle section state
var searchedOnce,switchOverride;
var switchGlobalOverride = function() {
  if (searchedOnce) return switchOverride;
  searchedOnce = true;
  switchOverride = document.body.innerHTML.match(/switch_global:(\w+)/i);
  if (!switchOverride) return false;
  switchOverride = switchOverride[1];
  return true;
}


// look for span elements of class swith
addOnloadHook( function() {
  var plus  = '<img src="' + toggleImages + '/Plus.png"  /> ';
  var minus = '<img src="' + toggleImages + '/Minus.png" /> ';
  switchGlobalOverride();
  var toggle = function( el ) {
      var elClass = el.className ? el.className.toLowerCase() : null;
      if (!elClass) return false;
      
      switchOverride = switchGlobalOverride();
	 
      var state;
      if (elClass.match(/^switch\w*/)) {
	var proceed = elClass.split(':');
	elClass = proceed[0];
	state   = proceed[1];
      }

      if (!state) {
        state = 'closed';
      }

      if (elClass == 'switch') {
        if (switchOverride) {
	  state = switchOverride;
        }
        var id     = el.getAttribute('id');
        var elName = el.getAttribute('title') || id;
	var html   = el.innerHTML;
	var indent = el.getAttribute('indent');

 	el.innerHTML = '';

	var hide   = document.createElement('div');
	var show   = document.createElement('div');
	var doShow = document.createElement('span');
	var doHide = document.createElement('span');

	hide.setAttribute('id',id+':hidden');
        show.setAttribute('id',id+':visible');
	doHide.setAttribute('id',id+':hide');
	doShow.setAttribute('id',id+':show');

	indent = indent ? '&nbsp;&nbsp;&nbsp;&nbsp;' : '';
	doHide.innerHTML = indent + minus + elName;
	doShow.innerHTML = indent + plus  + elName;
	
        doHide.setAttribute('onclick','doToggle(this)');
	doShow.setAttribute('onclick','doToggle(this)');

        // stupid IE
        if (document.all && !window.opera) {
          doShow.onclick = function() {doToggle(this)};
        }	

        YAHOO.util.Dom.setStyle(doShow,'cursor','pointer');
        YAHOO.util.Dom.setStyle(doShow,'color','blue');
        YAHOO.util.Dom.setStyle(doHide,'cursor','pointer');
        YAHOO.util.Dom.setStyle(doHide,'color','blue');

        // initial state (default: closed)
        var hideState = state == 'closed' ? 'none' : 'block';
        var showState = state == 'closed' ? 'block' : 'none';
        YAHOO.util.Dom.setStyle(show,'display',showState);
        YAHOO.util.Dom.setStyle(hide,'display',hideState);

        show.appendChild(doShow);
        hide.appendChild(doHide);
        el.appendChild(show);
        el.appendChild(hide);
        hide.innerHTML = hide.innerHTML + '<br>' + html;
      }               
      else if (elClass == 'switch_global') {
        var openMsg  = el.getAttribute('open_title') || 'Open all sections';
	var closeMsg = el.getAttribute('close_title')|| 'Close all sections';

        var hide   = document.createElement('div');
        var show   = document.createElement('div');        
        var doShow = document.createElement('span');
        var doHide = document.createElement('span');
        hide.setAttribute('id',id+':hidden');
        show.setAttribute('id',id+':visible');
        doHide.setAttribute('id',id+':hide');
        doShow.setAttribute('id',id+':show');
        
        doHide.innerHTML = minus + closeMsg;
        doShow.innerHTML = plus  + openMsg;

        doHide.setAttribute('onclick','doToggleAll(0)');
        doShow.setAttribute('onclick','doToggleAll(1)');

       // stupid IE
        if (document.all && !window.opera) {
          doShow.onclick = function() {doToggleAll(1)};
	  doHide.onclick = function() {doToggleAll(0)};
        }

        YAHOO.util.Dom.setStyle(doShow,'cursor','pointer');
        YAHOO.util.Dom.setStyle(doShow,'color','blue');
        YAHOO.util.Dom.setStyle(doHide,'cursor','pointer');
        YAHOO.util.Dom.setStyle(doHide,'color','blue');

        // initial state (default: closed)
        var hideState = state == 'closed' ? 'none' : 'block';
        var showState = state == 'closed' ? 'block' : 'none';
        YAHOO.util.Dom.setStyle(show,'display',showState);
        YAHOO.util.Dom.setStyle(hide,'display',hideState);

        show.appendChild(doShow);
        hide.appendChild(doHide);
        el.appendChild(show);
        el.appendChild(hide);
      }
    }
    
    var divs = document.getElementsByTagName('div');
    for (var i=0; i<divs.length; i++) toggle(divs[i]);
}
);


// If there is a div of class 'protected' in an document
// loaded in an iframe, replace the page's content with
// the div's content only
addOnloadHook( function() {
  var protected = document.getElementById('protected');
  if (protected && window.parent.frames.length > 0) {
    document.body.innerHTML = protected.innerHTML;
  }
} );