/* -----------------------------------------------------------------
 * jslibs
 * Version: 1.0
 * ----------------------------------------------------------------- */

jQuery(document).ready(function(){

  navigationSelector();
  styleswitchinit();

});

/* -----------------------------------------------------------------
 * navigation selector
 * Version: 1.0
 * ----------------------------------------------------------------- */
function navigationSelector() {

  var requrl=document.URL;
  var result = requrl.match(/[a-zA-Z0-9._#?=-]*$/);
  if(result != null) {
    var linkstr = result[0].replace(/#[0-9a-zA-Z]*$/,'');
    if(linkstr=="") linkstr = "index.html";
    jQuery("div#sidebar li [href="+linkstr+"]").addClass("On");
  }
}


/* -----------------------------------------------------------------
 * jqswitch.js - jQuery method for style switch
 * Version: 1.0
 * Copyright (c) 2007 A.Kawashima
 * Licensed under the MIT License:
 * http://www.lllcolor.com
 * ----------------------------------------------------------------- */
function styleswitchinit() {

  jQuery('.styleswitch').click(function() {

    var matches = jQuery(this).attr("class").match(/\d+/);
    var no    = "";
    if(matches != null) no = matches[0];

    switchstyle(this.getAttribute("rel"),no);

    for(var k=1;k<=3;k++){
      if(k==no){
        jQuery(this).removeClass("fontsize"+no);
        jQuery(this).addClass("fontsize"+no+"_On");
      }else{
        jQuery("#fontsel"+k).removeClass("fontsize"+k+"_On");
        jQuery("#fontsel"+k).addClass("fontsize"+k);
      }
    }

  return false;
  });

  // initial
  var currentstyle   = readCookie('cssstyle');
  var currentstyleno = readCookie('cssstyleno');
  if (currentstyle && currentstyleno){
    switchstyle(currentstyle,currentstyleno);
    jQuery("#fontsel"+currentstyleno).removeClass("fontsize"+currentstyleno);
    jQuery("#fontsel"+currentstyleno).addClass("fontsize"+currentstyleno+"_On");
  }else{
    // default value
    var currentstyleno = 1;
    jQuery("#fontsel"+currentstyleno).removeClass("fontsize"+currentstyleno);
    jQuery("#fontsel"+currentstyleno).addClass("fontsize"+currentstyleno+"_On");
  }
}

function switchstyle(styleName,no){
  jQuery('link[@title=changestyle]').removeAttr("href");
  jQuery('link[@title=changestyle]').attr({ href: styleName });
  createCookie('cssstyle',   styleName, 365);
  createCookie('cssstyleno', no,        365);
}

// cookie script http://www.quirksmode.org/js/cookies.html
function createCookie(name,value,days) {
  if (days)
  {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else var expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++)
  {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}