reload desktop window frame

[krishna]

desktop:ctl00_ContentPlaceHolder1_MyDeskTop.desktop});new Ext.net.DesktopWindow({id:"Win_10",maximizable:true,minimizable:true,autoShow:true,ctCls:"max",hidden:true,height:480,width:640,monitorResize:true,layout:"fit",autoLoad:{url:"/Pages/MyTask.aspx",scripts:true,mode:"iframe",showMask:true,maskMsg:"Loading..."},iconCls:"mnu-mytask-icon",title:"MyTask",tools:[{id:"alearticon",handler:function(event,toolEl,panel){EHR.Alert()},qtip:"Reminder!"}],minHeight:480,minWidth:640,resizable:false,manager:ctl00_ContentPlaceHolder1_MyDeskTop.desktop.getManager()

above code is view source code m unbale to reload this window (OR) close the window
above bold items are my window ID...
please help me .....