function show(){
document.getElementById('lightbox').style.display='block';
document.getElementById('lightbox_content').style.display='block';
getInfo();
}

function hide(){
document.getElementById('lightbox').style.display='none';
document.getElementById('lightbox_content').style.display='none';
}

function getInfo() {
	$target="lightbox_content";
	$url = "/function/email.php?page=" + document.getPage.page.value + "&cFile=" + document.getPage.file.value;
  document.getElementById($target).innerHTML = '';
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (req != undefined) {
    req.onreadystatechange = function() {showRequest($target);};
    req.open("GET", $url, true);
    req.send("");
  }
}  

function showRequest(target) {
  if (req.readyState == 4) { // only if req is "loaded"
    if (req.status == 200) { // only if "OK"
      document.getElementById(target).innerHTML = req.responseText;
    } else {
      document.getElementById(target).innerHTML="Error...";
    }
  }
}

function validate() {
	if (document.emailFriend.name.value==""){alert("Please enter your name");
	}else if (document.emailFriend.email.value==""){alert("Please enter your e-mail address");
	}else if (document.emailFriend.rname.value==""){alert("Please enter your friend's name");
	}else if (document.emailFriend.remail.value==""){alert("Please enter your friend's e-mail address");
	}else{document.emailFriend.submit();}
}