ajaxmı javamı anlamadım ben

sayfa kaynağı aşağıdaki gibi

Alıntı
//Sorf//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
var windowIndex = 0;

MyDesktop.BogusModule = Ext.extend(Ext.app.Module, {
init : function(){
this.launcher = {
text: 'Window ',
iconCls:'b000',
handler : this.createWindow,
scope: this,
windowId:windowIndex
}
},
//------------------------------------------------------//
Link1 : function(src){
var desktop = this.app.getDesktop();
var win = desktop.getWindow('bogus');
if(!win){
win = desktop.createWindow({
id: '1',
title:src.text,
width:820,
height:600,
html : '<p><iframe src="https://www.r10.net/images/yapim.htm" width="100%" height="100%" scrolling="yes" frameborder="0" border="0" margin="0px"></iframe></p>',
iconCls: 'b014',
shim:false,
animCollapse:false,
constrainHeader:true
});
}
win.show();
},
//--------------------------------------------------------//
Link2 : function(src){
var desktop = this.app.getDesktop();
var win = desktop.getWindow('bogus');
if(!win){
win = desktop.createWindow({
id: '2',
title:src.text,
width:820,
height:600,
html : '<p><iframe src="https://www.r10.net/images/yapim.htm" width="100%" height="100%" scrolling="yes" frameborder="0" border="0" margin="0px"></iframe></p>',
iconCls: 'b014',
shim:false,
animCollapse:false,
constrainHeader:true
});
}
win.show();
},
//--------------------------------------------------------------//
Link3 : function(src){
var desktop = this.app.getDesktop();

var win = desktop.getWindow('bogus');
if(!win){
win = desktop.createWindow({
id: '3',
title:src.text,
width:820,
height:600,
html : '<p><iframe src="https://www.r10.net/images/yapim.htm" width="100%" height="100%" scrolling="yes" frameborder="0" border="0" margin="0px"></iframe></p>',
iconCls: 'b014',
shim:false,
animCollapse:false,
constrainHeader:true
});
}
win.show();
},
//---------------------------------------------------//
Link4 : function(src){
var desktop = this.app.getDesktop();
var win = desktop.getWindow('bogus');
if(!win){
win = desktop.createWindow({
id: '4',
title:src.text,
width:820,
height:600,
html : '<p><iframe src="https://www.r10.net/images/yapim.htm" width="100%" height="100%" scrolling="yes" frameborder="0" border="0" margin="0px"></iframe></p>',
iconCls: 'b014',
shim:false,
animCollapse:false,
constrainHeader:true
});
}
win.show();
},