// by zhangxinxu  welcome to visit my personal website http://www.zhangxinxu.com/

// 任意锚点平滑跳转插件

// 2010-07-15 v1.0

(function($){

	$.fn.zxxAnchor = function(options){

		var defaults = {

			ieFreshFix: true,

			anchorSmooth: true,

			anchortag: "anchor",

			animateTime: 1000

		};

		var sets = $.extend({}, defaults, options || {});

		//修复IE下刷新锚点失效的问题

		if(sets.ieFreshFix){

			var url = window.location.toString();

			var id = url.split("#")[1];

			if(id){

				var t = $("#"+id).offset().top;

				$(window).scrollTop(t);

			}	

		}

		//点击锚点跳转

		$(this).each(function(){

			//$(this).click(function(){

				var aim = $(this).attr(sets.anchortag).replace(/#/g,"");	//跳转对象id

				var pos = $("#"+aim).offset().top;

				if(sets.anchorSmooth){

					//平滑

					$("html,body").animate({scrollTop: pos}, sets.animateTime);	

				}else{

					$(window).scrollTop(pos);

				}

				return false;				   

			//});	

		});

	};

})(jQuery);