// JavaScript Document
var last_expanded = "";

function showHide(id)
{	
	// Retrieve the element clicked
	var obj = document.getElementById(id);	

	// Check if previous element was clicked	
	// If yes, then swap images for previous element
	if (last_expanded != "") {
		// Retrieve previous element and it's class name
		var last_obj = document.getElementById(last_expanded);
		
		// Swap previous element's images
		last_obj.src = "images/" + last_obj.id + ".gif";
	}
			
	// Reset the previous element's id
	last_expanded = id;		
	
	  
	// Swap images for selected element
	obj.src = "images/" + obj.id + "Cur.gif";
	
}