var emailtoafriendwin  
function emailtoafriend(url) {    
  if (!emailtoafriendwin || emailtoafriendwin.closed)	{
	emailtoafriendwin = window.open('email_to_friend.php?url='+url,'emailtoafriendwin','width=300,height=650,scrollbars=yes,resizable=yes')   
  }    
  emailtoafriendwin.focus()  
}    
function closewindow() {
  if (emailtoafriendwin) {
	if (!(emailtoafriendwin.closed)) emailtoafriendwin.close();	
  }
}