JS自定义弹出对话框的问题？

Question

当对话框弹出来之后，怎样屏蔽当前的页面，为不可用，当关闭对话框后，为可用。用jquery如何实现?

Answer 1

你说的是自定义的？需要用css把那个东西弄掉

Answer 2

调用这个方法就OKfunction showBackShadow(content){  var str=content; var msgw,msgh,bordercolor;    msgw=400;//提示窗口的宽度   msgh=100;//提示窗口的高度   titleheight=25 //提示窗口标题高度   bordercolor="#c51100";//提示窗口的边框颜色   titlecolor="#c51100";//提示窗口的标题颜色  
var sWidth,sHeight;    sWidth=screen.width;    sHeight=screen.height;      var bgObj=document.createElement("div");    bgObj.setAttribute('id','bgDiv');    bgObj.style.position="absolute";    bgObj.style.top="0";    bgObj.style.background="#cccccc";    bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";    bgObj.style.opacity="0.6";    bgObj.style.left="0";    bgObj.style.width=sWidth + "px";    bgObj.style.height=sHeight + "px";    bgObj.style.zIndex = "10000";    document.body.appendChild(bgObj);      var msgObj=document.createElement("div")    msgObj.setAttribute("id","msgDiv");    msgObj.setAttribute("align","center");    msgObj.style.background="white";    msgObj.style.border="1px solid " + bordercolor;    msgObj.style.position = "absolute";    msgObj.style.left = "50%";    msgObj.style.top = "50%";    msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";    msgObj.style.marginLeft = "-225px" ;    msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";    msgObj.style.width = msgw + "px";    msgObj.style.height =msgh + "px";    msgObj.style.textAlign = "center";    msgObj.style.lineHeight ="25px";    msgObj.style.zIndex = "10001";      var title=document.createElement("h4");    title.setAttribute("id","msgTitle");  

title.className = "easyui-dialog" title.setAttribute("align","right");    title.style.margin="0";    title.style.padding="3px";    title.style.background=bordercolor;    title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";    title.style.opacity="0.75";    title.style.border="1px solid " + bordercolor;    title.style.height="18px";    title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";    title.style.color="white";    title.style.cursor="pointer";    title.innerHTML="关闭";    title.onclick=function(){    document.body.removeChild(bgObj);    document.getElementById("msgDiv").removeChild(title);    document.body.removeChild(msgObj);    }    document.body.appendChild(msgObj);    document.getElementById("msgDiv").appendChild(title);    var txt=document.createElement("p");    txt.style.margin="1em 0"  txt.setAttribute("id","msgTxt");    txt.innerHTML=str;    document.getElementById("msgDiv").appendChild(txt);    }