function entsub_meta(nav, form, event)
{
	switch (nav)
	{
	case 'Microsoft Internet Explorer' :
		return entsub_ie(arguments[1]);
	case 'Netscape' :
		return entsub_ns(arguments[2], arguments[1]);
	}
}		
/* Credits Jukka Korpela - http://www.cs.tut.fi/~jkorpela/forms/enter.html */
function entsub_ie(myform) {
  if (window.event && window.event.keyCode == 13)
    myform.submit();
  else
    return true;}

function entsub_ns(event,ourform) {
  if (event && event.which == 13)
    ourform.submit();
  else
    return true;}