var GetChatDialog = function(){
    var dialog;
    
    return {
    	show: function () {
	 			dialog = this.dialog;
	 			if(!dialog){
			    dialog = new Ext.BasicDialog("getchat-dlg", { 
			      modal: true, width:400, height:300, shadow:false, draggable: true, resizable: false, collapsible: false, autoTabs:true
			    });
			    dialog.addKeyListener(27, dialog.hide, dialog);
			    GetChatDialog.initDialog(dialog);
				}
				dialog.show();
				this.dialog = dialog;
	 		},
	 		
	 		initDialog: function (dialog) {
	 			
	 		}
	 	}
}();