// Validate email

function checkEmail() {
  text=document.emailform.Recipient_Email.value;
  if (text.indexOf("@")<3){
    alert(" This recipient's email address seems wrong. Please"
    +" check the prefix and '@' sign.");
    return false;
  }
  if ((text.indexOf(".com")<5)&&(text.indexOf(".org")<5)
    &&(text.indexOf(".gov")<5)&&(text.indexOf(".net")<5)
    &&(text.indexOf(".co.uk")<7)&&(text.indexOf(".nl")<4)
    &&(text.indexOf(".mil")<5)&&(text.indexOf(".edu")<5)
	&&(text.indexOf(".ca")<4))
  {
     alert(" The recipient's email address seems wrong. Please"
     +" check the suffix. (It should include a .com, .ca, .edu,"
     +" .net, .org, .gov, .co.uk, .nl, or .mil)");
     return false;
  }
return true;
} 

// Pop up window 

function openPopUp(fileName, sc, ht)
   {
   // get the screen width and amount to subtract for popupwindow width
   var wd = screen.width;
   var amt = wd-520;
   var where = "left="+amt;
   var params = sc+',status=no,menubar=no,toolbar=no,width=510,'+ht+',top=0,'+where; 

   // open the window
   copyWin = window.open(fileName,'popupwin',params);
   }