var old;
var memold;
var bwasinside = false;

if(document.layers)
{
	window.captureEvents(Event.MOUSEDOWN);
	window.onmousedown=do_out;
}

function show_layer(x)
{
	if(document.layers)
		document.layers[x].visibility="show";
	else
		document.all[x].style.visibility="visible";
}
function hide_layer(x)
{
	if(x!='')
	{
		if(document.layers)
			document.layers[x].visibility="hide";
		else
			document.all[x].style.visibility="hidden";
	}
}

function do_check(x)
{
	if(old && old!=x)
	{
		hide_layer(old);
		show_layer(x);
		old=x;
	} else
	
	{
		if(!old)
			old=memold;
		if(old!=x)
		{
			show_layer(x);
			old=x;
		}
	}
}
function do_out()
{
	if(old)
		hide_layer(old);
    	memold=old;
	    old="";
}

function checkoutside()

{
  if(!bwasinside)
  {
    do_out()
  };
  bwasinside = false;
}

function inside()
{
   bwasinside = true;
}