Very impressive. I have noticed a small bug though. When I drag an item into my form (a textbox for example) about 50% of the time it creates two of them. I am

Very impressive. I have noticed a small bug though. When I drag an item into my form (a textbox for example) about 50% of the time it creates two of them. I am using Chrome 10.0.648.133 on Windows 7. What tech was used to create the form editor?