2013. World Works
function toggle(obj) {
var obj=document.getElementById(obj);
if (obj.style.display == "block") obj.style.display = "none";
else obj.style.display = "block";
}
More images
function toggle(obj) {
var obj=document.getElementById(obj);
if (obj.style.display == "block") obj.style.display = "none";
else obj.style.display = "block";
}