ns4 = (document.layers)? true:falseie4 = (document.all)? true:false// SHOW AND HIDEfunction showObject(id) {	if (ns4) document.layers[id].visibility = "show";	//else if (ie4) document.all[id].style.visibility = "visible";	else document.getElementById(id).style.visibility = "visible";}function hideObject(id) {	if (ns4) document.layers[id].visibility = "hide";	//else if (ie4) document.all[id].style.visibility = "hidden";	else document.getElementById(id).style.visibility = "hidden";}