openlayer调用arcgis server发布的wms服务显示地图但是地图上下被压缩了

[coco爱火女]

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var lon = 105;
var lat = 39;
var zoom = 2;
var map, layer, options;

function init(){
map = new OpenLayers.Map( 'map' );
layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://192.168.246.103:6080/arcgis/services/adcc_map/MapServer/WMSServer?", {layers: '0'} );
map.addLayer(layer);

map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);
map.addControl( new OpenLayers.Control.LayerSwitcher() );
}
</script>
</head>
<body onload="init()">
<div id="map" class="bigmap"></div>
</body>
</html>

[liudoris]

楼主这个问题如何解决的