function BAcommon() {
	this.env  = {};
	this.ns   = {};
	this.prfx = {};

	this.env.ua       = navigator.userAgent;
	this.env.isMac    = this.env.ua.match(/Mac/),
	this.env.isWin    = this.env.ua.match(/Win/),
	this.env.isWinXP    = this.env.ua.match(/Windows NT 5.1/),
	this.env.isNN     = document.layers,
	this.env.isMoz    = this.env.ua.match(/Gecko\//),
	this.env.isN6     = this.env.ua.match(/Netscape6\//),
	this.env.isSafari = this.env.ua.match(/AppleWebKit/),
	this.env.isOpera  = (window.opera);
	this.env.isIE     = (document.all && !this.env.isOpera);
	this.env.DOMok    = (document.documentElement && document.getElementsByTagName);
	this.ns.rootNS    = (this.env.DOMok) ? document.documentElement.namespaceURI : null
	this.ns.xhtml1    = 'http://www.w3.org/1999/xhtml';
	this.ns.bAattrs   = 'urn:bA.attrs';
	this.prfx.bAattrs = 'bAattrs:';
	this.sharedDir    = '/design/shared/css/';

	this.showErrMsg   = false;
}

var tinyBA = new BAcommon();

function loadReviseCSS() {
	var prefix = 'yd_';
	var suffix = '.css';

	var label  = (tinyBA.env.isNN  && tinyBA.env.isWin) ? 'forwn4':
	             (tinyBA.env.isNN  && tinyBA.env.isMac) ? 'formn4':
	             '';

	if (label) {
		var href = tinyBA.sharedDir + prefix + label + suffix;
		document.write('<link rel="stylesheet" type="text/css" href="' + href + '">');
	}
}

loadReviseCSS();

function loadReviseJS() {
	if(!document.layers){
		document.write('<script type="text/javascript" src="/design/shared/js/yd_rollover.js"><\/script>');
	}
}

loadReviseJS();