function videopagesel(page)
{
var i=page;
var t="t"+ i;
var b="b" + i;

for(cnt = 1; cnt <= 15; cnt++) {
	document.getElementById(cnt).style.display="none";
	document.getElementById("t"+cnt).className='';
	document.getElementById("b"+cnt).className='';
}
document.getElementById(i).style.display="block";
document.getElementById(t).className='active2';
document.getElementById(b).className='active2';
return false;
}

function writtenpagesel(page)
{

var i=page;
var t="t"+ i;
var b="b" + i;
for(cnt = 1; cnt <= 20; cnt++) {
	document.getElementById(cnt).style.display="none";
	document.getElementById("t"+cnt).className='';
	document.getElementById("b"+cnt).className='';
}
document.getElementById(i).style.display="block";
document.getElementById(t).className='active2';
document.getElementById(b).className='active2';

return false;
}