$(function()
{
	$('#functions_filter > li > ul').each(function()
	{
		var top_level = $(this).parent();
		var children = top_level.children('ul');
		
		top_level.children('label').after('<img src="/images/plus.gif" alt="Expand Functions" class="expand"/>');
		children.hide();		
		
		top_level.expanded = false;
		
		top_level.children('img').click(function()
		{
			if (!top_level.expanded)
			{
				children.show();
				top_level.children('img').attr('src','/images/minus.gif');
				top_level.expanded = true;
				
			}
			else {
				children.hide();
				top_level.expanded = false;
				top_level.children('img').attr('src','/images/plus.gif');
			}
		});
	});
	
	$('#search_query').parent().append('<img src="/images/hide_filters.png" alt="Hide Filters" class="show_hide_filters" />');
	//$('.filters').hide();
	var filters_hidden = false;
	
	$('.show_hide_filters').click(function()
	{
		if (filters_hidden)
		{
			$('.filters').show('fast');	
			$('.show_hide_filters').attr('src','/images/hide_filters.png');
			filters_hidden = false;
		}
		else
		{
			$('.filters').hide('fast');	
			$('.show_hide_filters').attr('src','/images/show_filters.png');
			filters_hidden = true;
		}
	});
	
});