First you have to find out the horizontal and vertial position of the location (your back door).
Point the cam there, and read the values from the 'Devices' tab in the program.

For this example let's assume that your back door is at
Horizontal -21
Vertical 2

now add this to your page:

<a href="/pos--21,2" target="pos">View back door</a>

if you don't want this link to open a new window, add a iframe somewhere on your page:

<iframe src="" height="1" width="1" name="pos" frameborder="0"></iframe>

this frame will not be visible and the result of the 'pos' request will be hidden in there

For more examples look at the html files in your wwwroot directory.