问一个js的特效问题，就是窗口屏幕变黑且不能使用，并弹出可供操作窗口

JQuery,prototype等js框架可以轻松实现这效果你搜一下

解决方案 »

  1.   

    贴图
    这种效果 也称作lightbox 用了滤镜  还不如用cteatePopup
      

  2.   

    模态对话框
    ext可以轻松实现
      

  3.   


    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <title>无标题文档</title>
    </head><body>
    <div class="cecmbody" id="cecmpolicy">
          <div class="leftClass">
                 <p>测试</p>
           <input type="button" value="点击这里" onclick="sAlert('<a href=http://www.uxing.cn/>测试效果</a>');" />
      
          </div>
          <div class="rightClass">
          </div> 
    </div>
            <script type="text/javascript" language="javascript">       function sAlert(str){
       document.body.style.overflow = "hidden";
           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="#336699";//提示窗口的边框颜色
           titlecolor="#99CCFF";//提示窗口的标题颜色
       
           var sWidth,sHeight;
           sWidth=document.body.offsetWidth;
           sHeight=screen.height;
           var bgObj=document.createElement("div");
           bgObj.setAttribute('id','bgDiv');
           bgObj.style.position="absolute";
           bgObj.style.top="0";
           bgObj.style.background="#777";
           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.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.style.overflow = "auto";
                        }
             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);
                    }
          </script></body>
    </html>