The different event handling on the different browsers makes this a little tricky. I had to make all divs absolute positioned to make it work in netscape. A check represents money but is not cash. It's a piece of paper the check writer uses to instruct his or her financial institution to release funds. With proper identification, you can open a checking account at most financial institutions.
Checks are reliable and convenient for most transactions.
Using them frees you from the risk of carrying large sums of cash. Therefore, you may not want to write checks for small amounts unless you're mailing a payment. If mailing a payment, sending a check is acceptable, but mailing cash can be risky. Cash lost in transit can't be replaced, while a lost check can be. Paying with a check through the mail provides proof of payment because the recipient must endorse the check to cash it or deposit it.