Thanks for the great site. I use it every day. I am also a web developer. Every screencast video I see on youtube that highlights your site, the same thing happens. Whenever someone goes to the airports icon the charts icon pops down inadvertently. Sometimes over and over. I do it at least 5-10 times every time I visit Skyvector. It is an easy fix. Instead of hover dropdown, just make all the icons click dropdown, similar to the Airports and Help icons.  The devil is in the details! I look at things from a dev point of view. This is only respectful constructive criticism to a fantastic site. Keep up the good work!