(function($) {
	$.tbox = function(data) {
		$.tbox.init()
		$.tbox.loading()
		$.isFunction(data) ? data.call($) : $.tbox.reveal(data)
	}
	$.tbox.popup = function(url) {
	//	alert(url);
		$.tbox.init()
		$.tbox.loading()
		if (url.match(/#/)) {
			var urls    = url.split('#')[0]
			var target = url.replace(urls,'')
			$.tbox.reveal($(target).clone().show())
		} else {
			$.get(url,function(data){$.tbox.reveal(data)})
		}
	}
	$.tbox.settings = {
		tbox_html  : '\
		<div id="tbox" style="display:none;"> \
			<table class="popup" align="center" border="0" border="0" cellpadding="0" cellspacing="0"><tr><td> \
			  <div class="body"> \
				<div id="tbox_content" class="content"></div> \
			  </div> \
			</td></tr></table> \
		</div> \
		<div id="tbox_background" class="tbox_background" style="display:none;"></div>'
	}

	$.tbox.loading = function() {

		if ($('#tbox .loading').length == 1) return true

		$('#tbox .content').empty().append('<div class="loading">loading...</div>')

		var pageScroll = $.tbox.getPageScroll()
		$('#tbox').css({
			top:	pageScroll[1]	+	($.tbox.getPageHeight() / 10),
			left:	pageScroll[0]	+	document.body.clientWidth/2 - $('#tbox').width()/2
		}).show()

		$('#tbox_background').css({
			height:	document.body.clientHeight + 100
		}).show()
		
	}
	//向tbox中填充数据
	$.tbox.reveal = function(data) {
		$('#tbox .content').empty()//.append(data)
		document.getElementById("tbox_content").innerHTML = data;
		$('#tbox .body').children().fadeIn('fast')
	}
	//执行关闭
	$.tbox.close = function() {
		$(document).trigger('close.tbox')
		return false
	}
	//绑定关闭事件
	$(document).bind('close.tbox', function() {
		$('#tbox').fadeOut(function() {
			$('#tbox_background').hide()
			$('#tbox .content').removeClass().addClass('content')
		})
	})

  $.tbox.init = function(settings) {
    if ($.tbox.settings.inited) {
      return true
    } else {
      $.tbox.settings.inited = true
    }
    if (settings) $.extend($.tbox.settings, settings)
    $('body').append($.tbox.settings.tbox_html)
	//tbox中，设置class为close的按钮为关闭
    $('#tbox .close').click($.tbox.close)
  }

  // getPageScroll() by quirksmode.com
  $.tbox.getPageScroll = function() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {	 // Explorer 6 Strict
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {// all other Explorers
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }
    return new Array(xScroll,yScroll)
  }

  // adapter from getPageSize() by quirksmode.com
  $.tbox.getPageHeight = function() {
    var windowHeight
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }
    return windowHeight
  }

})(jQuery);