No Duplicate Selects Form ~ Tested in IE6.0, Netscape8.1, Opera9.0, Firefox1.5.0.4 and AOL Explorer1.2

P revent a selected option text or value from being chosen in another select box. In other words, you cannot make the same selection twice. You must make different selections in each form field or you will get an alert message to that effect.

We have tested the code in IE6.0, Firefox1.5.0.4, Opera9.0, Netscape8.1 and AOL Explorer1.2. This script worked well in all platforms with no variations observed.

For your Information: Before we begin, we feel obligated to advise you that the above form is for all intensive purposes a "Stand Alone" script. In other words, it really does not do much of anything other than what you see. In order to make it function as designed, you need to incorporate it into a valid working form. If you do not have a good Solid Knowledge of HTML coding, javascripts, forms and reconfigurations, please "Do Not Attempt" this until you are Proficient in the aforementioned areas.

D epending on your knowledge of HTML and javascripts, this is an easy three (3) part copy and paste code that goes in both the <HEAD> and <BODY> sections of your document. It also makes use of an external .js script you need to save and upload into your directory.

Note Of Importance: If you are not sure of howto make the external .js file and make use of it within your document, grab the below link and it is fully explained.
[ .js File Howto ]

For your Information: If you are not comfortable or prefer not to use the external.js file, you can use the traditional cut/copy and paste instead of the external .js file. If you need a little refresher on what is required to achieve this, grab the below link and it is fully explained.
[ Traditional Cut/Copy and Paste ]

Step One Depending on which of the above methods you have selected (external.js file or Traditional Copy/Cut & Paste), you will add either the snipplet of code into the <HEAD> section or the completed section of code that you added the opening and closing script tags.

Snipplet Of Code
<script type="text/javascript" src="noDups.js">
</script> Traditional Copy/Cut and Paste
<SCRIPT LANGUAGE="JavaScript">

<HEAD> Section of code goes here

// End -->
</script>

External .js file

Traditional Copy/Cut & Paste code with opening & closing tags that you had to add into the <HEAD> section of code that was originally earmarked to be an external .js file.

I f you would like to see an example of this effect using the "Traditional Cut/Copy & Paste" method, grab the below link and you are there. Examine our "Source" code (on the page you will be opening) to see how we had to reconfigure it to make it work. We have it very well documented for your convenience.
[ Traditional Cut/Copy & Paste Method ]

Step Two Whichever above step you have selected, once that is completed, now you need to incorporate (paste) a section of code into a valid form located in the <BODY> section of the document.

For your Information: This effect will only work with dropdown menus (more than one 1). It was designed for a form that you had more than one choice to make and you could not have the same answer more than one (1) time in each section this effect would be inserted.

W e hope our tutorial was easy to follow and we covered everything in detail. If you would like to add this effect into your pages, grab the respective below link and you are there. If you have any problems with this or anything else, feel free to consult our [ FAQ ] and if you can't find the answer there, [ contact us ].
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