烦闷ExtJs的panel不能很好的兼容ie8

Ext.onReady(function(){

?

?

//定义左边面板

?var panelLeft = ?new Ext.Panel({

columnWidth: .42,

title:"Eclipse",

height:400,

?? ?id:'panel01',

style:{margin:'0px 10px 0px 10px'},

collapsible:true,

tbar:[{text:'File'},{text:'Edit'},{text:'Source'},{text:'Refactor'}],

bbar:[{text:'Show View as a fast view'}],

buttons:[{text:"Submit"}, {text:"Reset"}],

html:"<h1><font color='blue'>Edocom company of NanJing</font></h1>"

?

?});

?

?

?//定义右边面板

?var panelRight = new Ext.Panel({

columnWidth:.38,

id:'panel02',

height:300,

//collapseFirst:true,

//style:{margin:'0px 10px 0px 10px'},

//collapsible:true,

//disable:false,

//hidden:true,

//titleCollapse:true,

title:'用户注册',

//autoLoad:'load.html',

html:'<h1>userName</h1>'

//tbar:[{text:'Login'}],

//bbar:[{text:'Register Inf'}],

//buttons:[{text:'Submit'}, {text:'Reset'}]

?});

?

?//定义总面板在item中包含panelLeft、panelRight

?var panel = new Ext.Panel({

renderTo: Ext.getBody(),

style:{margin:'10px 0px 0px 0px'},

//width:1024,

//height:768,

//layout:"column",

layout:"column",

border:false,

//floating:false,

//frame: false,

items:[panelLeft,panelRight]

});

});

?

?

在火狐浏览器中是没有问题地。但是也找不到很好的解决方法，只知道：两个panel都不加bar的时候，还是能很好的显示；并且两者的columnWidth都不能改为width。我预测是ExtJs的样式有问题，不过具体原因有待进一步调试，观察。