Input from form changes URL

[SLJ90]

Hello, I am trying to make a page with a text box in where the user enters their post code and hits 'Submit' then it loads an embeded google maps map.

with the following code:

<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://www.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;geocode=&amp;q=gym+**POSTCODE**&amp;sll=37.0625,-95.677068&amp;sspn=30.461748,86.572266&amp;ie=UTF8&amp;hq=gym&amp;hnear=**POSTCODE**,+United+Kingdom&amp;output=embed"></iframe><br /><small><a href="http://www.google.com/maps?f=q&amp;source=embed&amp;hl=en&amp;geocode=&amp;q=gym+**POSTCODE**&amp;sll=37.0625,-95.677068&amp;sspn=30.461748,86.572266&amp;ie=UTF8&amp;hq=gym&amp;hnear=**POSTCODE**,+United+Kingdom" style="color:#0000FF;text-align:left">View Larger Map</a>

I have typed **POSTCODE** where the user input needs to go.. Any ideas how this could be done? Thanks

[is_numeric]

If you are in the UK the Post Office own Post Code data and they provide a flat file which is chargeable

Its not cheap

If you want to progress then you will need this data file