jquery滚动到导航后悬浮停止页面顶部 兼容ie6

if ($.browser.msie && ($.browser.version == "6.0") && !$.support.style) {
var handler,sTop,dTop;
    dTop = $("#fixedNav").offset().top
    $(window).bind('scroll',function(){
        window.clearTimeout(handler);
        handler = window.setTimeout(function(){
            sTop = $(document).scrollTop();
            sTop > dTop ? $("#fixedNav").css("top",sTop - dTop) : $("#fixedNav").css("top",0);
     $("#fixedNav").css({"position":"relative","z-index":"1200"});
        },60);
    });
}else{

 var topMain= $("#fixedNav").offset().top
 $(window).scroll(function(){
  if ($(window).scrollTop()>topMain){
   $("#fixedNav").addClass("nav_scroll");
  }else{
   $("#fixedNav").removeClass("nav_scroll");
  }
 });

 }
});
</script>

function htmlPosition(obj)
{
 var o = obj;
 var t = o.offsetTop;
 var l = o.offsetLeft;
 while(o = o.offsetParent)
 {
  t += o.offsetTop;
  l += o.offsetLeft;
 }
 obj.data_top = t;
 obj.data_left = l;
}

var oldHtmlWidth = document.documentElement.offsetWidth;
window.onresize = function(){
 var newHtmlWidth = document.documentElement.offsetWidth;
 if(oldHtmlWidth == newHtmlWidth)
 {
  return;
 }
 oldHtmlWidth = newHtmlWidth;
 elFix.style.position = 'static';
 htmlPosition(elFix);
 htmlScroll();
}
window.onscroll = htmlScroll;

var elFix = document.getElementById('fixedRight');
htmlPosition(elFix);

</script>