<!--
nn4 = (document.layers)? true : false;
ie = (document.all)? true : false;
var timeout;
function show(menu)
{
	if(ie || nn4)
	{
	hide_all();
		if(nn4)
			document.layers[menu].visibility = "show";
		else
			document.all[menu].style.visibility = "visible";
	}
}
function hide_all(id)
{
	if(nn4){
		document.layers['m1'].visibility = "hide";
		}
	else{
		document.all['m1'].style.visibility = "hidden";
		}
}

function rload(url)
{
var img = new Image; img.src = url; return img;
}
	
rload('img/btn_4.gif');
rload('img/btn_5.gif');
rload('img/btn_6.gif');
rload('img/btn_7.gif');
rload('img/btn_8.gif');
rload('img/btn_9.gif');
rload('img/btn_4_on.gif');
rload('img/btn_5_on.gif');
rload('img/btn_6_on.gif');
rload('img/btn_7_on.gif');
rload('img/btn_8_on.gif');
rload('img/btn_9_on.gif');
//-->