This looks like a great site for this kind of question.
I have a website where all the access validation information is kept on a separate site. I planned to have a page on the validation site which allowed users to log in and then use a hyper link to jump to the content site.
I figured I would prevent invalid users from accessing the content site by rejecting anyone whose previous site was not the specific one expected. Seems pretty easy, all I needed was a function to return the value of most recent URL visited. I even eventually found history.previous and though I had it until I realized it was Netscape only (not an option).
I admit I am pretty new to all of this, I write code with a reference site in the background and a manual in one hand. So I figure I am not seeing something obvious.
Please let me know if anyone has a solution for this. I greatly appreciate any time and effort spent in this assistance.