[imanobody]

Hey guys, I have a friend who is using a DIV transparent overlay with a modal popup that is to prevent people from using his software past a trial period. Although maybe less than 15% of these customers are smart enough to inspect element and delete the overlay. Is there an alternative to a DIV overlay which won't allow this?

[Charger]

Best way is to actually prevent the content from showing unless the subscription is active.

Show an image or something.

[Owl]

Validate the trial before sending the content.

[Nachfolger]

Server-side. Anything done client-side is editable by the user. Need I repeat what's said above, don't send any data unless the trial is active.

[Rushax]

Is it taking user accounts/info into account? If so use this to create an expiry date + 14 days time or whatever from when they signed up. Nach is correct saying this should be dealt only with server-side.
Then a simple if statement on the page:

if(date is below specific users expiry date)
show trial div
else
show need to purchase/trial ran out div

[Invincible]

Lots of CMS these days make this easier. You can set up a members only area to access the software and have it expire when trial ends also prompting them to renew with an invoicing system.

[Hyanix]

Validate the trial before sending the conten

[Pikzul]

Validate server side as a few others said above.