function swap(vis,layername,linkname) {
ulayername = "u" + layername;
if (vis==true) {
document.getElementById(layername).style.visibility = "visible";
document.getElementById(ulayername).style.visibility = "visible";
document.getElementById(linkname).style.color = "#FF6666";
 }
else {
document.getElementById(layername).style.visibility = "hidden";
document.getElementById(ulayername).style.visibility = "hidden";
document.getElementById(linkname).style.color = "#D0D0D0";
 }
}

function chst(st, picname) {
document.getElementById(picname).className = st;
}