function pop(url) {
  link = window.open(url,"pop","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=600,height=450,left=25,top=25");
}
function popchangerequest(url) {
  link = window.open(url,"pop","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0,width=400,height=250,left=25,top=25");
}