> <img src="http://123.456.0.1?doc=myimage.gif%26instance=1"/>
> 
> Now the problem is that the escaped ampersand '%26' is not being
> interpreted as the delimeter for the name value pairs, and 
> doc is coming
> through as 'image.gif&instance=1'.

The reason for escaping it as %26 is surely to say that you don't want it
treated as a delimiter!

Michael Kay