请问一下，js前台如何自定义弹出窗口
弹出窗口的样子差不多如下

------解决方案--------------------
1: 用showModalDialog 详细解释http://blog.csdn.net/d_hongran/article/details/6865599 
function   OpenEditWin(strID)     
     {   
            var   url;   
            url   = "DocumentAdd.aspx?Doc_ID=" +strID+"&action=update";   
            window.showModalDialog(url,window,'dialogwidth:800px;dialogheight=300px;status=no;help=no;resizable=no;scroll=no;center=yes;location=no');
        }