I currently use an external service for a price comparison unit I have on one of my sites. The way you load the price comparison block is via javascript:

```
<script type="text/javascript" language="javascript" src="http://www.easycontentunits.com/js_unit.php?ecu_mid=3706&amp;ecu_uid=101734"></script>

```

If you were to paste the above code into a html page, you would see a block of prices, more info buttons etc. However, if you loaded the source page directly, it shows no content and a completely blank page:

```
http://www.easycontentunits.com/js_unit.php?ecu_mid=3706&amp;ecu_uid=101734

```

I am looking to write some code for another site I run and would like it to work like the example above. I.E. when I load an external php page via javascript, it will show it on the webpage. If you followed the link and loaded the external page it would show a blank page.

How would you go about this? Is it some special php code, or a trick with htaccess or similar?

Any help would be greatly appreciated.