To add button to tabpanel [extjs 3.2]

You can add custom components here, but you need to extend the TabPanel class. You can find examples here: left and right .

var scrollMenu = this.header.insertFirst({
    cls: 'x-tab-tabmenu-right'
});

      

        
        
        
      

    

and css styles for the button:

.x-tab-scroller-right-over {
    background-position: -18px 0;
}

.x-tab-tabmenu-right {
    background: transparent url(http://dev.sencha.com/deploy/ext-3.4.0/examples/tabs/tab-scroller-menu.gif) no-repeat 0 0;
    border-bottom: 1px solid #8db2e3;
    width:18px;
    position:absolute;
    right:0;
    top:0;
    z-index:10;
    cursor:pointer;
}
.x-tab-tabmenu-over {
    background-position: -18px 0;
}
.x-tab-tabmenu-disabled {
    background-position: 0 0;
    opacity:.5;
    -moz-opacity:.5;
    filter:alpha(opacity=50);
    cursor:default;
}