$(function() {
$.fn.manhuatoTop = function(options) {
var defaults = {
showHeight : 400,
speed : 1000
};
var options = $.extend(defaults,options);
$("body").prepend("");
var $jdxstoTop2 = $(this);
var $jdxstop2 = $("#jdxstotop2");
var $jdxsta2 = $("#jdxstotop2 a");
$jdxstop2.hide();
$jdxstoTop2.scroll(function(){
var scrolltop=$(this).scrollTop();
if(scrolltop>=options.showHeight){
$jdxstop2.show();
}
else{
$jdxstop2.hide();
}
});
$jdxsta2.hover(function(){
$(this).addClass("cur");
},function(){
$(this).removeClass("cur");
});
}
$(window).manhuatoTop({
showHeight : 400,
speed : 300
});
});
function showiframe2(){
document.getElementById("jdxsbg2").style.height= $(document).height()+"px";
document.getElementById("jdxsbg2").style.width= $(document).width()+"px";
document.getElementById("jdxsbg2").style.display ="block";
var top= document.documentElement.scrollTop||document.body.scrollTop;
top =top+50;
document.getElementById("jdxsshow2").style.marginTop=top+"px";
var kuandu=($(document).width()-$("#jdxsshow2").width())/2;
document.getElementById("jdxsshow2").style.right=kuandu+"px";
document.getElementById("jdxsshow2").style.display ="block";
}
function closehidejdxs2(){
document.getElementById("jdxsbg2").style.display ="none";
document.getElementById("jdxsshow2").style.display ="none";
}