var n = "";
function timeOutMainNav(a) {
    var hide2 = "hideBox('nav_" + a + "')";
    n = setTimeout(hide2,500);
}
function hideNav(a) {
    var d = document.getElementById("subnav");
    var dLength = d.getElementsByTagName("img").length;
    
    for (var i = 1; i < dLength + 1; i++){
		document.getElementById("nav_1").style.display="none";
	} 
    
    document.getElementById("nav_1").style.display="";
}

function hideBox (id) {
	if(document.getElementById){
		document.getElementById(id).style.display="none";
	}
}

function swap_pic(img, desc){
	var lrgPic = document.getElementById('large_pic');
	var picDesc = document.getElementById('big_picturename');
	
	lrgPic.src = img;
	// picDesc.innerHTML = desc;
}