function area_nav(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("nav"+i.toString()) != null )
	{
		document.getElementById("nav"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("nav"+index.toString()).style.display = 'block';
}

function area_softcom(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("softcom"+i.toString()) != null )
	{
		document.getElementById("softcom"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("softcom"+index.toString()).style.display = 'block';
}
function area_update(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("update"+i.toString()) != null )
	{
		document.getElementById("update"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("update"+index.toString()).style.display = 'block';
}
function area_top(index){
for(var i=1;i<=4;i++)
{
	if( document.getElementById("top"+i.toString()) != null )
	{
		document.getElementById("top"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("top"+index.toString()).style.display = 'block';
}
function area_tool(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("tool"+i.toString()) != null )
	{
		document.getElementById("tool"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("tool"+index.toString()).style.display = 'block';
}
function area_arta(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("arta"+i.toString()) != null )
	{
		document.getElementById("arta"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("arta"+index.toString()).style.display = 'block';
}
function area_artb(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("artb"+i.toString()) != null )
	{
		document.getElementById("artb"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("artb"+index.toString()).style.display = 'block';
}
function area_artc(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("artc"+i.toString()) != null )
	{
		document.getElementById("artc"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("artc"+index.toString()).style.display = 'block';
}
function area_softabout(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("softabout"+i.toString()) != null )
	{
		document.getElementById("softabout"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("softabout"+index.toString()).style.display = 'block';
}
function area_arttop(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("arttop"+i.toString()) != null )
	{
		document.getElementById("arttop"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("arttop"+index.toString()).style.display = 'block';
}
function area_expo(index){
for(var i=1;i<=2;i++)
{
	if( document.getElementById("expo"+i.toString()) != null )
	{
		document.getElementById("expo"+i.toString()).style.display = 'none';	
	}
}
	document.getElementById("expo"+index.toString()).style.display = 'block';
}