// Sequentially list items in bg/ directory
function dynamicContent(elementid,content){
if (document.getElementById && !document.all){
rng = document.createRange();
el = document.getElementById(elementid);
rng.setStartBefore(el);
htmlFrag = rng.createContextualFragment(content);
while (el.hasChildNodes())
el.removeChild(el.lastChild);
el.appendChild(htmlFrag);
}
else {
document.getElementById(elementid).innerHtml=content;
}
}


var bgCaptions = [ 
	[ "School of Visual Arts Catalog, 1966–1967. Designed by George Tscherny." ], 	
	[ "School of Visual Arts promotion, undated." ], // 1
	[ "School of Visual Arts Catalog, 1961–1962." ], // 2
	[ "School of Visual Arts Catalog, 1968–1969. Designed by Milton Glaser." ], // 

];



// Randomize and set background and background caption.

var dd = new Date();
var feed = dd.getDate() / 31;

pick = Math.floor ((feed * (bgCaptions.length)));
pick = 3;
// document.getElementById('l-type').src = "logo/" + pick + ".gif";
document.body.style.backgroundImage = "url(/bg/" + pick + ".jpg)";
dynamicContent('bgcredit', '<span class=\"caps\">BACKGROUND</span> ' + bgCaptions[pick]);