Please help me understand how this works in HTML. I go to the following site:

http://iic.tulsacounty.org/SearchForm.aspx

…and I do a search for First Name: "foo" and then I click Process Search. I get no search results, then I hit the Back button. When I look at this page using Firefox 13.0 on a Mac, the foo search term is still there and the First Name textbox is active and the cursor is at the start of the word "foo." When I look at this page using Safari 5.1.2 on a Mac, the cursor is at the end of the word "foo."

https://twitter.com/#!/search-home has the same behavior: Firefox 13 gives the cursor on the left side when pressing the Back button, and Safari 5.1.2 gives the cursor on the right.

However, http://clinicaltrials.gov/ct2/search is different. In Firefox 13 gives the cursor on the left, but in Safari the cursor is not in the textbox when pressing the Back button.

So, why does this happen? Assuming I just have your basic <form><input></form> HTML textbox, what can I do to make sure that the cursor will always be on the far right, regardless of browser? My users will want to search for something, then hit the Back button and only change the last digit of a search string of numbers, and then search again.