I am trying to add a link or button to the webpage so that the user can call a number directly if the skype is installed. it seems the link is like
skyp:....?call....
but cannot find any sample or documents. thanks for your help.
Skype has a description of their URIs on their developer site:
http://dev.skype.com/skype-uri
How well these work is entirely up to your browser and OS.