GEO Source Code

I've looked at a lot of javascript tutorials on the web that promise to disable double submits on your HMTL forms. Here is the simplest bit of javascript code that I found worked the best. Just add the following code to your submit button:

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onclick="this.disabled=true,this.form.submit();" 

The javascript is executed the first time someone clicks the submit button. The first bit of code 'this.disabled=true' disables the button so it can't be clicked again. The second bit of code 'this.form.submit()' then submits the form results (the form won't work at all without this code). In the end, your form should look something like this (with your own additional fields in there, of course):

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<form>
<input type="submit" value="Send" onclick="this.disabled=true,this.form.submit();">
</form>