function Ajax_Class () {
	this.include_dir='include/';
	
	this.load_on = function (el) {
		var loader = el.getElementsByClassName('loader')[0];
		var height = el.getHeight();
		loader.setStyle({	
			'height': height
		});
		loader.show();
		return true;
		
	}
}


function reload_focus () {
	var $_target_div = $('focus_cont');
	
	my_Ajax.load_on($_target_div);
	$('reload_btn').hide();
	new Ajax.Updater(
		{success:$_target_div}, 
		my_Ajax.include_dir+'reload_focus.php', 
		{ method: 'post' }
	);
}

my_Ajax = new Ajax_Class();