//the next 3 lines are browser detection for user-agent DOMS
ns4 = (document.layers) ? true:false //required for Functions to work
ie4 = (document.all) ? true:false //required for Functions to work
ng5 = (document.getElementById) ? true:false //required for Functions to work

function hideEvent() {

if (ng5) document.getElementById('event1').style.visibility = "hidden"
else if (ns4) document.event1.visibility = "hide"
else if (ie4) event1.style.visibility ="hidden"

}

function showEvent(n) {
hideEvent();
if (ng5) document.getElementById('event' + n).style.visibility = "visible";
else if (ns4) document.layers["event" + n].visibility = "show";
else if (ie4) document.all["event" + n].style.visibility = "visible";
}