//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 hideSec() {
if (ng5) document.getElementById('sec5').style.visibility = "hidden"
else if (ns4) document.sec5.visibility = "hide"
else if (ie4) sec5.style.visibility ="hidden"

if (ng5) document.getElementById('sec55').style.visibility = "hidden"
else if (ns4) document.sec55.visibility = "hide"
else if (ie4) sec55.style.visibility ="hidden"

if (ng5) document.getElementById('sec555').style.visibility = "hidden"
else if (ns4) document.sec555.visibility = "hide"
else if (ie4) sec555.style.visibility ="hidden"

if (ng5) document.getElementById('sec123').style.visibility = "hidden"
else if (ns4) document.sec555.visibility = "hide"
else if (ie4) sec555.style.visibility ="hidden"


if (ng5) document.getElementById('sec7').style.visibility = "hidden"
else if (ns4) document.sec7.visibility = "hide"
else if (ie4) sec7.style.visibility ="hidden"

if (ng5) document.getElementById('sec77').style.visibility = "hidden"
else if (ns4) document.sec77.visibility = "hide"
else if (ie4) sec77.style.visibility ="hidden"

if (ng5) document.getElementById('sec777').style.visibility = "hidden"
else if (ns4) document.sec777.visibility = "hide"
else if (ie4) sec777.style.visibility ="hidden"

}

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