var last_link;
var last_proj;

var link_class_selected = "proj_link_selected";
var link_class = "proj_link";

function init(){
	last_link = document.getElementById("link_START");
	last_proj= document.getElementById("proj_START");
}
	
function showPic (whichpic) {
try{
	if (document.getElementById) {
		document.getElementById('placeholder').src = whichpic.href;
		var link = document.getElementById("s_" + whichpic.name);
		var proj = document.getElementById("proj_" + whichpic.name);
		
		// change project out
		proj.style.visibility="visible";
		if (last_proj){
			last_proj.style.visibility="hidden";
		}
		last_proj = proj;
			
		// change link
		link.setAttribute("class",link_class_selected);
		if (last_link){
			last_link.setAttribute("class",link_class);
		}
		last_link = link;
		
		return false;
	} else {
		return true;
	}
}
catch(ex) {
	alert(ex.message);
}
}