I have a formpanel that contain a tabpanel with some tabs. A panel is in the second tab, it contain a column layout panel with "layout:'form'" attribute. This column layout panel contain a DateField with "disabled:true" attribute, in IE6 and IE7 this DateField's trigger icon disappeared, and its width shown invalid.

My js code:
PHP Code:
Ext.onReady(function(){

    
Ext.QuickTips.init();
    
Ext.form.Field.prototype.msgTarget 'side';

    var 
store = new Ext.data.SimpleStore({
        
fields: ['abbr''state''nick'],
        
data Ext.exampledata.states // from states.js
    
});

    var 
tab2 = new Ext.FormPanel({
        
id"frmTab2",
        
labelAlign'left',
        
title'Inner Tabs',
        
bodyStyle:'padding:5px',
        
width600,
        
height450,
        
items: [{
            
layout:'column',
            
border:false,
            
items:[{
                
columnWidth:.5,
                
layout'form',
                
border:false,
                
items: [{
                    
xtype:'textfield',
                    
fieldLabel'First Name',
                    
name'first',
                    
anchor:'95%'
                
}]
            },{
                
columnWidth:.5,
                
layout'form',
                
border:false,
                
items: [{
                    
xtype:'textfield',
                    
fieldLabel'Last Name',
                    
name'last',
                    
anchor:'95%'
                
}]
            }]
        },{
            
xtype:'tabpanel',
            
plain:true,
            
activeTab0,
            
height:300,
            
layoutOnTabChangetrue,
            
deferredRenderfalse,
            
defaults:{bodyStyle:'padding:10px'},
            
items:[{
                
title:'Personal Details',
                
layout:'form',
                
defaults: {width230},
                
defaultType'textfield',

                
items: [{
                    
fieldLabel'First Name',
                    
name'first',
                    
allowBlank:false,
                    
value'Jack'
                
}]
            },{
                
title:'Phone Numbers',
                        
id'telTabPanel',
                
items: [
                
                    {
layout:'column',
                    
id'jobPanelChild1',
                    
title'Some Information',
                    
style: {paddingTop:'20px'},
                        
items:[
                              {
columnWidth:.5,
                              
labelWidth110,
                        
labelAlign'left',
                        
border:false,
                          
defaults: {width120},
                          
style:{paddingTop:'10px',paddingLeft:'10px',paddingBottom:'5px'},
                            
layout'form',
                            
items: [{
                                    
xtype'textfield',
                                
fieldLabel'Home',
                                            
id'txtHome',
                                
name'home',
                                
value'(888) 555-1212'
                            
},{
                                
xtype'textfield',
                                
fieldLabel'Business',
                                
name'business'
                            
},{
                                
xtype'datefield',
                                
fieldLabel'BirthDate',
                                
disabledfalse,
                                
name'birthdate'
                            
},
                            new 
Ext.form.ComboBox({
                                
fieldLabel'State',
                                
storestore,
                                
displayField:'state',
                                
typeAheadtrue,
                                
mode'local',
                                
triggerAction'all',
                                
emptyText:'Select a state...',
                                
selectOnFocus:true
                            
})
                        ]}
//{columnWidth:.5,
                    
]},//Some Information
                    
{layout:'column',
                    
title'Contact Details',
                    
style: {paddingTop:'20px'},
                        
items:[
                              {
columnWidth:.5,
                              
labelWidth110,
                                
labelAlign'left',
                                  
border:false,
                          
defaultType'textfield',
                          
defaults: {width120},
                          
style:{paddingTop:'10px',paddingLeft:'10px',paddingBottom:'5px'},
                            
layout'form',
                            
items: [{
                                
fieldLabel'Mobile',
                                
name'mobile'
                            
}
                        ]}
                    ]}
//Contact Details
            
]}//telTabPanel
        
]}],

        
buttons: [{
            
text'Save',
            
handler: function(){
                
alert(Ext.Ajax.serializeForm(tab2.getForm().getEl().dom.id));
            }
        },{
            
text'Cancel',
            
handler: function(){
                
document.write(Ext.Ajax.serializeForm("frmTab2"));
            }
        }]
    });

    
tab2.render(document.body);
    
}); 
My html code:
PHP Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<
html>
<
head>
    <
meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <
title>Forms</title>
    <
link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css"/>

    <
script type="text/javascript" src="../../adapter/prototype/prototype.js"></script>
    <script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>

    <script type="text/javascript" src="../../ext-all.js"></script>
    <script type="text/javascript" src="states.js"></script>
    <script type="text/javascript" src="testform.js"></script>
</head>
<body>

</body>
</html> 
I am sorry to my poor english.