var curlr="";
var curlb="";

function closemenu(whichLayer)
{
	toggleLayer("submenunav",'none');
	clorbtn(whichLayer,'#033266');
	if (curlb!=whichLayer)
	{
	clorbtn(curlb,'none');
	}
	curlb=whichLayer;
}

function openmenu(whichLayer)
{
	clorbtn(whichLayer,'#033266');
	if (curlb!=whichLayer)
	{
	clorbtn(curlb,'none');
	}
	curlb=whichLayer;
	
	toggleLayer("submenunav",'block');
	
	toggleLayer(curlr,'none');
	
	toggleLayer(whichLayer+'_sub','block');
	
	curlr=whichLayer+'_sub';
}

function toggleLayer(whichLayer,displ)

{
	if (whichLayer!=""){
		if (document.getElementById)
		{
			document.getElementById(whichLayer).style.display = displ;
			
		}
		else if (document.all)
		{
			document.all[whichLayer].style.display = displ;
		}
		else if (document.layers)
		{
			document.layers[whichLayer].style.display = displ;
			
		}
	}
}

function clorbtn(whichLayer,displ)

{

	if (whichLayer!=""){
		if (document.getElementById)
		{
			document.getElementById(whichLayer).style.background = displ;
			
		}
		else if (document.all)
		{
			document.all[whichLayer].style.background = displ;
		}
		else if (document.layers)
		{
			document.layers[whichLayer].style.background = displ;
			
		}
	}
}