function preload() {
	var btn_home2 = new Image();
	var btn_about2 = new Image();
	var btn_menu2 = new Image();
	var btn_howto2 = new Image();
	var btn_location2 = new Image();
	var btn_faq2 = new Image();
	var sbtn_pl2 = new Image();
	var sbtn_exp2 = new Image;
	btn_home2.src = "images/btn_home2.jpg";
	btn_about2.src = "images/btn_about2.gif";
	btn_menu2.src = "images/btn_menu2.gif";
	btn_howto2.src = "images/btn_howto2.gif";
	btn_location2.src = "images/btn_location2.gif";
	btn_faq2.src = "images/btn_career2.gif";
	sbtn_pl2.src = "images/sbtn_pl2.gif";
	sbtn_exp2.src = "images/sbtn_exp2.gif";
}

function MM_openBrWindow(theURL,winName,features) {
	window.open(theURL,winName,features);
}

function show_bs(div) {

	var ua = navigator.userAgent;

	if (ua.match(/Opera[\/\s](\d\.\d+)/)) {
		document.getElementById(div).style.display="";
	}
	else if (ua.match(/MSIE (\d\.\d+)/)) {
		document.all(div).style.display="";
	}
	else if (ua.match(/Mozilla\/(4\.[5678]\d?)/)) {
		document.write("Netscape Communicator " + RegExp.$1);
	}
	else if (ua.match(/Netscape6?\/([\.\d]+)/)) {

	}
	else if (ua.match(/Safari\/([\.\d]+)/)) {
		document.getElementById(div).style.display="";
	}
	else if (ua.match(/Gecko/)) {
		if (ua.match(/(Firebird|Firefox)\/([\.\d]+)/)) {
			document.getElementById(div).style.display="";
		}
		else if (ua.match(/Thunderbird\/([\.\d]+)/)) {
			document.write("Mozilla Thunderbird " + RegExp.$1);
		}
		else if (ua.match(/rv:([\.\d]+)/)) {
			document.write("Mozilla " + RegExp.$1);
		}
		else {
			document.write("Mozilla");
		}
	}
	else {
		document.write("N/A");
	}
}
function hide_bs(div) {
	document.getElementById(div).style.display="none";
}