var Open = ""
var Closed = ""
Open.src = "open.gif"
Closed.src = "closed.gif"

function preload(){
if(document.images){
	Open = new Image(16,13)    
	Closed = new Image(16,13)
//	Open.src = "http://www.mypurdue.com/open.gif"
//	Closed.src = "http://www.mypurdue.com/closed.gif"
}}


function showhide(what,what2){
if (what.style.display=='none'){
what.style.display='';
what2.src="open.gif"
}
else{
what.style.display='none'
what2.src="closed.gif"
}
}