function zl_hd(l,s) {
zl_lref(l).style.visibility = s;
}
function zl_lref(l) {
return document.getElementById(l);
}
function displayLayer(l) {
zl_hd(l,'visible');
}
function hideLayer(l) {
zl_hd(l,'hidden');
}
function writeHTML(l,h) {
zl_lref(l).innerHTML = h;
}
function layerWidth(l) {
return zl_lref(l).offsetWidth;
}
function layerHeight(l) {
return zl_lref(l).offsetHeight;
}
function moveLayer(l,x,y) {
zl_lref(l).style.left = x;
zl_lref(l).style.top = y;
}
function moveLayerHorizontally(l,x) {
zl_lref(l).style.left = x;
}