function checkAvailability( tmp ) {
  
  var f = document.forms[0];
  var y = f.enqyear.options[f.enqyear.selectedIndex].text;
  var m = f.enqmonth.options[f.enqmonth.selectedIndex].value;
  
  if (tmp=='admin') {
  	var URL = 'editavailability.php?month=' + m + '&year=' + y;
  } else {
	var URL = 'checkavailability.php?month=' + m + '&year=' + y;	
  }
  
  document.location = URL;

}