/**
 * jQuery likes to steal object binding sometimes; this lets us steal it back.
 */
function bind(func, object) {
	var method = func;
	return function() {
		return method.apply(object, arguments);
	};
};

jQuery(function() {
  /**
   * Adding .js to the body allows us to make global styling changes as soon as
   * the DOM is loaded.
   */
  jQuery('body').addClass('js');
  
  /**
   * This line is sheer laziness: it lets us style links that wrap images
   * without having to add the class by hand.
   */
	jQuery('a:has(img)').addClass('imagelink');
	
	/**
	 * Give the current element a class to let us style it up. Good for
	 * differentiating particular comments or articles on archive pages,
	 * if they've been specifically linked to.
	 */
	var current = jQuery(window.location.hash);
  if (current) current.addClass('current');
  
  /**
   * Switch the current element around dynamically, i.e. as a user clicks
   * on another comment permalink or date-based permalink.
   */
	jQuery('.date a, .meta a').bind('click', function(clickevent) {
	  current.removeClass('current');
	  current = jQuery(this.hash);
	  current.addClass('current');
	});
	
  /**
   * Search box object with a label and text input field. If the text input has
   * no content, it is filled with the label text, which then vanishes on click.
   */
	var Sbox = function(input, label) {
	  this.input = jQuery(input);
	  this.label = jQuery(label);
    
	  if (this.input.length + this.label.length < 2) return;
    
    this.text = this.label.text();
    
    if (this.input.attr('value').length < 1)
      this.input.attr('value', this.text);
    
    this.input.click(bind(this.empty, this));
    this.input.blur(bind(this.fill, this));
	};
	
	Sbox.prototype = {	  
	  
	  empty: function() {
      if (this.input.attr('value') === this.text)
        this.input.attr('value', '');
	  },
	  
	  fill: function() {
      if (this.input.attr('value').length === 0)
        this.input.attr('value', this.text);
	  }
    
	};
	
	var sbox = new Sbox('#s', '#searchlabel');
});