Problem with AJAX upload in Safari

There is good example which shows how to make AJAX style upload via hidden IFRAME. But Safari and Konqueror browsers open new window. This happen because of CSS property display: none; used to hide IFRAME.

Just remove this property and use different method of hiding - move IFRAME object outside of your window:

left:-100px;
top:-100px;
width:1px;
height:1px;