function queryValue(variable) {

  var query = window.location.search.substring(1);
  var vars = query.split("&");

  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      return pair[1];
    }
  } 
  
  return null;
}

function openCalendarWindow(field, name){
	
	var win = window.open('calendar.asp?field=' + field, name, 'toolbars=auto,width=230,height=210,scrollbars=auto');
	
}