fireInternet/res/extjs/docs/guides/components/examples/floating_panel/app.js

/**
 * @example Floating Panel
 *
 * Demonstrates some commonly used features of floating components
 */
Ext.require('Ext.tab.Panel');
Ext.require('Ext.window.MessageBox');

Ext.onReady(function() {

    var panel = Ext.create('Ext.panel.Panel', {
        width: 200,
        height: 100,
        floating: true,
        draggable: true,
        title: 'Test',
        html: 'Test Panel'
    });

    Ext.create('Ext.button.Button', {
        renderTo: Ext.getBody(),
        margin: 10,
        text: 'Show Panel',
        handler: function() {
            panel.show(); // show the panel
        }
    });

    Ext.create('Ext.button.Button', {
        renderTo: Ext.getBody(),
        margin: 10,
        text: 'Hide Panel',
        handler: function() {
            panel.hide(); // hide the panel
        }
    });

    Ext.create('Ext.button.Button', {
        renderTo: Ext.getBody(),
        margin: 10,
        text: 'Align Panel to this button',
        handler: function() {
            // align the top left corner of the panel to the bottom right corner
            // of this button, offset by 3 pixels in each direction
            panel.alignTo(this.getEl(), 'tl-br', [3, 3]);
        }
    });

    Ext.create('Ext.button.Button', {
        renderTo: Ext.getBody(),
        margin: 10,
        text: 'Center Panel',
        handler: function() {
            panel.center(); // center the panel
        }
    });


});