You need CISM_DX installed to execute networks from this page. If, after selecting "Execute Network" for the first time you are prompted with an "Open With" dialog box, select the file cismdx_opendx_webcall, which is located in /usr/local/CISM_DX. Note that all browsers may not prompt you with an "Open With" dialog box.
Konqueror right click on Execute Network line, select Open With, Other, and /usr/local/CISM_DX/cismdx_opendx_webcall.
Other browsers: You may need to define a mime type.