<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Created by: http://london-net.net -->
<!-- Begin

var cal_array = new Array("fall", "spring",  "summer11"); // Put the id's of your hidden divs in this array 
  
function displayCal(the_cal){

	if (document.getElementById(the_cal).style.display==""){
		document.getElementById(the_cal).style.display = "none";
		}

	for (i=0;i<cal_array.length;i++){
		var my_cal = document.getElementById(cal_array[i]);
		my_cal.style.display = "none";
		}

	document.getElementById(the_cal).style.display = "";
  }
  
//  End -->