function externalLinks() { 
  if (!document.getElementsByTagName) return;
  var anchors = document.getElementsByTagName("a"); 
  for (var i=0; i<anchors.length; i++) {
    var anchor = anchors[i];
    if (anchor.getAttribute("href") &&
        anchor.getAttribute("rel") == "external") 
      anchor.target = "_blank";
    }
}
window.onload = externalLinks;

function sendReg ()	{
	if (document.register.email.value == "" || document.register.email.value == "email address")	{
	alert ('Please enter your email.');
	return false;
	}  
	document.register.submit();
	return true;
}

function sendComp()	{
	if ((eval("document.competition.answer[0].checked") == false) && (eval("document.competition.answer[1].checked") == false) && (eval("document.competition.answer[2].checked") == false))	{
	alert("Please select an answer");
	return false;
	}
	if (document.competition.email.value == "" || document.competition.email.value == "email address")	{
	alert ('Please enter your email.');
	return false;
	}
	if (document.competition.over18.checked == false) {
	alert ("Sorry, you need to be over 18 to take part.");
	return false;
	}
	document.competition.submit();
	return true;
}