textbox focus jumps to above dropdown list when clicked into

Question

Ive never seen this.

I click into my textbox to type in a value and as soon as i release the mouse button focus jumps to the above dropdown list. No javascript on these items.

If i hold the mouse button down i can type in a value to the textbox.

Any idea?

Answer 1

Someone might be catching the mouseup event.

Event handling differs across browsers which might explain why it happens in all browsers except IE7.