function donothing(){window.status='';}

function init(){
	if (document.layers) // NS4
		{layerRef="document.layers";styleSwitch="";}	
	if ((document.getElementById) && (!(document.all))) // NS6
		{layerRef = "document.getElementById";styleSwitch = ".style";}
        if (document.all) // IE5
		{layerRef="document.all";styleSwitch=".style";}
	}

function showLayer(layerName){
	if ((document.getElementById) && (!(document.all))) // NS6
{eval(layerRef + "(\"" + layerName + "\")" + styleSwitch + ".visibility = \"visible\"");}
else {eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');}
	}

function hideLayer(layerName){
	if ((document.getElementById) && (!(document.all))) // NS6
{eval(layerRef + "(\"" + layerName + "\")" + styleSwitch + ".visibility = \"hidden\"");}
else {eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');}
	}

init();

function boxclick(boxname) {
	if (boxname.checked==false)
		{boxname.checked=true;}
	else	{boxname.checked=false;}
	}