function SetTab( id1, id2, num, count)
{
	for(i=0; i<count; i++)
	{
		document.getElementById(id1+i).className='';
		document.getElementById(id1+id2+i).style.display='none';
	}
	document.getElementById(id1+num).className='select';
	document.getElementById(id1+id2+num).style.display='block';
}
function ShowNav(id)
{
		document.getElementById(id).style.display='block';
}
function HideNav(id)
{
		document.getElementById(id).style.display='none';
}