Planecrazy. I would let the folks who look after the website know about the problem.
Stack overflows in IE are often caused by errors in scripts, especially something called "infinite loops" or in recursive procedures.
If you, or someone you know, is tech savvy, then turn off scripts, including Java, and see if the problem is still there.
I'm not sure, but 1715 may refer to the offending line of code in the script.
Hope this helps
Cheers