json转换问题

{ 
"listhostnetworkcmdresponse" :  
{ "null" : 
{
"listBridge":[
{"bridgename":"management","type":"bridge" },
{"bridgename":"management","type":"bridge" }
 ],"listBond":
[
{"bondname":"bond0","type":"bond"},
{"bondname":"bond0","type":"bond"}
],
"listPhysical":
[ 
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"} ,
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"}
]
} 
}    
}
怎么把上面的json 在js页面 转变成
下面的样子？   
{
"listall":[
{"bridgename":"management","type":"bridge" },
{"bridgename":"management","type":"bridge" },{"bondname":"bond0","type":"bond"},
{"bondname":"bond0","type":"bond"},
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"} ,
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"} 
 ] 
}   或这个样子都可以
{
"listall"{
{"bridgename":"management","type":"bridge" },
{"bridgename":"management","type":"bridge" },{"bondname":"bond0","type":"bond"},
{"bondname":"bond0","type":"bond"},
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"} ,
{"physicalname":"eth8","type":"physical","speed":"100Mb/s"} 
}
} 
其中listBridge,listBond,listPhysical下面的对象个数不是固定的
大家互相讨论哈  请教了 谢谢 
json