Disabling submit button after click

Here's a simple yet effective way to do it, according to .Net Tip Of The Day. We've integrated a similar solution on our Framework Button control - please note that the button onClick has to know about an optionally confirmation message and this submit disabling feature while maintaining validators checking, so the final implementation is not quite as simple...

Please notice that this solution won't solve the page refresh problem - for this, check MetaBuilders.com.