//these 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 hideSec() {
if (ng5) document.getElementById('sec1').style.display = "none"
else if (ns4) document.sec1.display = "none"
else if (ie4) sec1.style.display = "none"

if (ng5) document.getElementById('sec2').style.display = "none"
else if (ns4) document.sec2.display = "none"
else if (ie4) sec2.style.display = "none"

if (ng5) document.getElementById('sec3').style.display = "none"
else if (ns4) document.sec3.display = "none"
else if (ie4) sec3.style.display = "none"

}

function showSec(n) {
hideSec();
if (ng5) document.getElementById('sec' + n).style.display = "block";
else if (ns4) document.layers["sec" + n].display = "block";
else if (ie4) document.all["sec" + n].style.display = "block";
}

function showAllSec(n) {
if (ng5) document.getElementById('sec' + n).style.display = "block";
else if (ns4) document.layers["sec" + n].display = "block";
else if (ie4) document.all["sec" + n].style.display = "block";
}