artPressBar() {
            document.getElementById("preview").style.display = "block";
        }
       
      
    </script>
</head>
<body onload="init()">
    <div id="mapCon">
        <div id="preview">
            <img src="static/assets/graphic-image/39-1.gif" alt='' /><br />
            <br />
            <span>正在查询，请稍候</span>
        </div>
    </div>
    <div id="menuContain" class='menuContain'>
        <div id="tool-container">
         <div id='dataSourceMenuID'  class="optmain" 