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How to resolve this issue  RSS feed

 
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I have a dropdown when user selects a value in it immediately another dropdown appears.If user clicks on submit without selecting a value in second dropdown,The second dropdown is disappearing and an error message to enter value in first dropdown is being displayed .

My doubt is How to make First Dropdown stable after selecting a value.When user tries to click submit button without entering a value in second dropdown I wanna display an alert message to user saying to enter city value and how to prevent its disaaperance after click on submit button.
 
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You can do it with a little JavaScript.

You check for the selectedIndex property of the dropdown box and make a decision.

Just google for the same.
 
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Please do not cross-post the same question in multiple forums. It wastes people's time when multiple redundant conversations take place.
 
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