function showcns()
{
	document.getElementById('cns').style.display="";
	document.getElementById('pbx').style.display="none";
	document.getElementById('cctv').style.display="none";
	document.getElementById('acs').style.display="none";
}
function hidecns()
{
	document.getElementById('cns').style.display="none";	
}
function showpbx()
{	document.getElementById('cns').style.display="none";
	document.getElementById('pbx').style.display="";
	document.getElementById('cctv').style.display="none";
	document.getElementById('acs').style.display="none";
}
function hidepbx()
{
	document.getElementById('pbx').style.display="none";	
}
function showcctv()
{
	document.getElementById('cns').style.display="none";
	document.getElementById('pbx').style.display="none";
	document.getElementById('cctv').style.display="";
	document.getElementById('acs').style.display="none";
}
function hidecctv()
{
	document.getElementById('cctv').style.display="none";	
}
function showacs()
{
	document.getElementById('cns').style.display="none";
	document.getElementById('pbx').style.display="none";
	document.getElementById('cctv').style.display="none";
	document.getElementById('acs').style.display="";
}
function hideacs()
{
	document.getElementById('acs').style.display="none";	
}
function hideclose()
{
	document.getElementById('cns').style.display="none";
	document.getElementById('pbx').style.display="none";
	document.getElementById('cctv').style.display="none";
	document.getElementById('acs').style.display="none";
}