/*
 * Droppy 0.1.2
 * (c) 2008 Jason Frame (jason@onehackoranother.com)
 */
$(function(){
	$('#nav').droppy();
});
 
$.fn.droppy = function(options) {
    
  options = $.extend({speed: 100}, options || {});
  
  this.each(function() {
    
    var root = this, zIndex = 1000;
    
    function getSubnav(ele) {
      if (ele.nodeName.toLowerCase() == 'li') {
        var subnav = $('> ul', ele);
        return subnav.length ? subnav[0] : null;
      } else {
        return ele;
      }
    }

    function getActuator(ele) {
      if (ele.nodeName.toLowerCase() == 'ul') {
        return $(ele).parents('li')[0];
      } else {
        return ele;
      }
    }

    function hide() {
      var subnav = getSubnav(this);
      if (!subnav) return;
		$.data(subnav, 'cancelHide', false);
		chgpic.setAttribute("src", chgpic.getAttribute("src").replace("_on", "_off"));
		setTimeout(function() {
        if (!$.data(subnav, 'cancelHide')) {
          $(subnav).slideUp(options.speed);
        }
      }, 0);
    }
  
    function show() {
      var subnav = getSubnav(this);
	  imgs = this.getElementsByTagName("img")[0].id;
	  if(imgs){
		  chgpic = document.getElementById(imgs);
		  chgpic.setAttribute("src", chgpic.getAttribute("src").replace("_off", "_on"));
	  }
      if (!subnav) return;
      $.data(subnav, 'cancelHide', true);
      $(subnav).css({zIndex: zIndex++}).slideDown(options.speed);
      if (this.nodeName.toLowerCase() == 'ul') {
        var li = getActuator(this);
        $(li).addClass('hover');
        $('> a', li).addClass('hover');
      }
    }
    
    $('li', this).hover(show, hide);
	$('li', this).hover(
      function() { $(this).addClass('hover'); $('> a', this).addClass('hover'); },
      function() { $(this).removeClass('hover'); $('> a', this).removeClass('hover'); }
    );

    
  });
  
};