two drop down menus

hi, i need to create two linked drop down menus, since i want to be able to chose from the first drop down menu (areas of bradford in particular) so that the choises in the second (buildings) will alter according to the first choice... is it possible?
bdimiAsked:
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bawasiCommented:
Yes. it is possible, but what kind of programming language you're using?
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Mayank SAssociate Director - Product EngineeringCommented:
Basically, the algorithm that you have to follow is: On selection of an item in the first drop-down, first clear all the contents of the second drop-down (if there are any), and then add the relevant items to the second drop-down.
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bdimiAuthor Commented:
I am using html within plsql...
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Mayank SAssociate Director - Product EngineeringCommented:
onChange of the value in the first combo-box, call a javascript function which will clear the contents of the second combo-box and populate it with the relevant data, based on the item which is selected in the first combo-box.
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Mayank SAssociate Director - Product EngineeringCommented:
Recommendation: Accept mayankeagle's comment as answer.
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Mayank SAssociate Director - Product EngineeringCommented:
Why a C :-(
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