Topic awaiting preservation: Open new window

Hi,
Can I open window using Javascript that won't be a child window of the opener (won't share the same session)?

10x in advanced
Yossi

I found solution to IE only
<script language=vbscript>
sub runIE
dim ie
set ie = CreateObject("WScript.Shell")
ie.Exec "iexplore.exe <URL>"
end sub
</script>