One Click

Insert the following java script code into any web page with a form on it.

Add onSubmit="return OneClick();" to your form eg:
<form name="form1" method="post" action="yourscript.pl" onSubmit="return OneClick();">

If you want a user to be able to submit the form after making changes within the timeout period then add the following to each item on the form.
onChange="FormChange()"

eg:
<input type="text" name="textfield" onChange="FormChange()">

Click this button twice to try it. ( 5 second timer )

<script language="JavaScript"> <!-- /* One Click prevent multiple clicks on a form can be reset if data on the form changes pops up a message if the form is submitted twice with no changes or less than 30 seconds passes */ var oneclicktick = 0; var oneclicktimer = 30000; // 30 seconds, change if required function OneClick () { var date = new Date(); if (!oneclicktick || ((date.getTime() - oneclicktick ) > oneclicktimer)) { oneclicktick = date.getTime(); return true; } else { alert("This information has already been submitted\nPlease wait for the web site to respond"); return false; } } // call this if you want to allow form submission if the user changes something function FormChange () { tick = 0; // reset timer } //--> </script>

Please Note: This is not a substitute for server side duplicate processing functions.
Do not rely on this function to prevent users from submitting an order twice. the script will fail if the user has Javascript turned off!