extJS 表格加入超链接的问题

Question

可是超级链接的地址不是我指定的地址，变成了 我当前的webcontent/www.baidu.com，请问各位大虾怎么修改才能够正确访问？代码如下
<script>
function showUrl(value){
return String.format('<a href="{0}">{0}</a>',value);
} Ext.onReady(function(){
var data=[
[1,'百度','www.baidu.com','team1'],
[2,'网易','www.163.com','team2'],
[3,'新浪','www.sina.com.cn','team3'],
[4,'腾讯','www.qq.com','team4']
   ];
   var store=new Ext.data.SimpleStore({data:data,fields:['id','name','homepage','organization']});
   var colM=new Ext.grid.ColumnModel([{header:'企业名称',dataIndex:'name',sortable:true},
              {header:'主页',dataIndex:'homepage',sortable:true,renderer:showUrl},
          {header:'开发团队',dataIndex:'organization'}]);
   var grid=new Ext.grid.GridPanel({
renderTo:'test',
title:'国内IT知名企业',
height:150,
width:600,
store:store,
cm:colM,
autoExpandColumns:2
      });
});
</script>

Answer 1

加http:// var data=[
                    [1,'百度','http://www.baidu.com','team1'],
                    [2,'网易','http://www.163.com','team2'],
                    [3,'新浪','http://www.sina.com.cn','team3'],
                    [4,'腾讯','http://www.qq.com','team4']
                      ];