function popup(page)    {  
window.open(page,'','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width=600,height=750,top=50,left=20');
}


function hide(d) {
document.getElementById(d).style.display = "none";
}
function show(d) {
document.getElementById(d).style.display = "";
}