Hello. On my site, there is a button that open a popup window with a flash chat plugin. When I click on this button again it call the opened window to open a new tab with another plugin without refresh. But, if I refresh the opener window, the popup reference is broken. And when I try to open a new tab, the opened window exists, but not it's instance, then, the popup content is refreshed. My solution on FireFox is: if ( !navigator.newWindow) navigator.newWindow= window.open.( "content.html", "popup"); It restores the opened window reference. But it doesn't work on another browsers... Could someone help me?