// Nazo script distributed under the terms of Creative Commons License
// http://tdiary-users.sourceforge.jp/cgi-bin/wiki.cgi?%A5%EA%A5%F3%A5%AF%B8%B5%A4%F2%A4%BF%A4%C9%A4%C3%A4%C6%A4%E2%A1%A2%A4%C9%A4%B3%A4%CE%CF%C3%C2%EA%A4%AB%A4%EF%A4%AB%A4%E9%A4%CA%A4%A4%A4%F3%A4%C7%A4%B9%A4%B1%A4%C9
var hiliteStyle = new Object();
hiliteStyle.color = "white";
hiliteStyle.backgroundColor = "black";

var hiliteElem = null;
var saveStyle = null;

function hiliteElement(name)
{
  if( hiliteElem ){
    for (var key in saveStyle){
      hiliteElem.style[key] = saveStyle[key];
    }
    hiliteElem = null;
  }

  hiliteElem = getHiliteElement(name);
  if ( !hiliteElem ) return;

  saveStyle = new Object();
  for (var key in hiliteStyle){
    saveStyle[key] = hiliteElem.style[key];
    hiliteElem.style[key] = hiliteStyle[key];
  }
}

function getHiliteElement(name)
{
  for (i=0; i<document.anchors.length; ++i) {
    var anchor = document.anchors[i];
    if ( anchor.name == name ) {
      var elem;
      if ( anchor.parentElement ) {
        elem = anchor.parentElement;
      } else if ( anchor.parentNode ) {
        elem = anchor.parentNode;
      }
      return elem;
    }
  }
  return null;
}

if( document.location.hash ){
  hiliteElement(document.location.hash.substr(1));
}

hereURL = document.location.href.split(/#/)[0];
for( var i = 0; i < document.links.length; i++ ){
  if( hereURL == document.links[i].href.split(/#/)[0] ){
    document.links[i].onclick = handleLinkClick;
  }
}

function handleLinkClick()
{
  hiliteElement(this.hash.substr(1));
}