本文实例分析了jQuery遮罩层效果。分享给大家供大家参考，具体如下：
先来看看示例代码：
");
$(window).scroll(function (){ resetBox();});
$(window).resize(function (){ resetBox();});
}
function resetBox() {
var full_Box = $("#full_Box").css("display");
if (full_Box == 'block') {
var bH = $(window).height();
var bW = $(window).width();
var objWH = getObjWh('dialog');
var tbT = objWH.split("|")[0] + "px";
var tbL = objWH.split("|")[1] + "px";
$("#dialog").css({top:tbT,display:"block"});
}
}
function getObjWh(obj) {
var st = $(window).scrollTop();
var sl = $(window).scrollLeft();
var ch = $(window).height();
var cw = $(window).width();
var objH = $("#"+obj).height();
var objW = $("#"+obj).width();
var objT = Number(st) + (Number(ch) - Number(objH))/2;
var objL = Number(sl) + (Number(cw) - Number(objW))/2;
return objT +"|" +objL;
}
function closeBox() {
$("#dialog").css("display","none");
$("#full_Box").css("display","none");
}
// -->
Box">