Urgent help needed for handling webservice from asp

[Suvojit]

We have an ASP that contains some data along with
three IFrames in it. The 'sources' for each of these
IFrames are set after the ASP page is loaded in the
browser using a Javascript function. Basically, this
JavaScript function checks if the rest of the page has
finished loading and then sets the "<IFrame>.src"
attributes for the three IFrames one after another.
Now, each of these IFrames contains separate ASPs.
These ASPs call one Web-Service each to get some data and
then render it in the IFrames. The problem arises when one
of the Web Services in any one of the ASPs fail to respond
and hangs up without returning any error message. We are
expecting that if one web-service fails for a ASP, then
the other two ASPs should execute and get rendered in the
corresponding IFrames in the browser. But it does not
happen. All the three IFrames hang up together.

Could you please suggest us anything to solve
this ?
We want to get the corresponding data loaded in
the three IFrames asynchronously, so that even if one
fails, the others are not affected. Can IFrames load
asynchrounously when called from the browser through a
Javascript function ?