Drawing disappears when I click on a hyperlink

[Anonymous]

I have a page which include the dwf-viewer in an iframe.

The dwf-drawings have hyperlinks in them which open a popup-window. The hyperlink is on the format "javascript:window.open(.......)".

The link works in the sense that the popup appears correctly, but when I click the link the drawing disappears, and is replaced by a blank frame with the text "function n(u) {window.open(....);}"

This page used to worked correctly, and I believe the problem arose after I installed an IE6-update.

Does anyone know how to solve this problem, or at least a workaround? Is it for example possible to set the target-attribute in the dwf-hyperlink?

TIA,
Andreas