<script language="JavaScript">
  i=1;
function oneTime(){
  if(i==1){
	openWindow();
	if(popupWin)
	  i++;
  }
}

function openWindow() {
popupWin = window.open('http://www.mxtabs.net', 'remote', 'width=700,height=500,menubar=yes,location=yes,toolbar=yes,scrollbars=yes,resizable=yes')
}
</script> 