sFTP issue

[jamert]

Hi with a page the user triggers a sFTP action, getting file from another server. I'm stuck on a useability issue and was wondering if it can be handles in a global way, like using global.asax

When the user initiates the ftp process, it can take upto 20 seconds for the process to conclude, if the user changes their mind and clicks on a menu link, then the site freezes until the sfrp is done. its an ugly situation. Is thee a way to check for page events or am i better using ajax with javascript to disconnect?

Thanks