// JavaScript Document

function browserCheck() {
	var ua = navigator.userAgent;
	var b = navigator.appName;
	if (b=="Netscape") this.b = "ns";
	else if (b=="Microsoft Internet Explorer") this.b = "ie";
	else this.b = b;		
	if(this.opera = (ua.indexOf('Opera')>0)) { this.b = 'opera'; }	
	this.v = parseInt(navigator.appVersion);
	
	if(ua.indexOf('Win')>0) {
		this.platform = 'win';
	} else if(ua.indexOf('Mac')>0) {
		this.platform = 'mac';
	} else {
		this.platform = 'unknown';
	}
	
	this.ns = (this.b=="ns" && this.v>=4);
	this.ns4 = (this.b=="ns" && this.v==4);
	this.ns5 = (this.b=="ns" && this.v==5);
	this.ie = (this.b=="ie" && this.v>=4);
	this.ie4 = (ua.indexOf('MSIE 4')>0);
	this.ie5 = (ua.indexOf('MSIE 5')>0);
	this.ie6 = (ua.indexOf('MSIE 6')>0);
	if (this.ie5) this.v = 5;
	if (this.ie6) this.v = 6;
	this.min = (this.ns || this.ie);
}

var browser = new browserCheck();
	
function fnSetHoverClass(parentID, tag, hoverClass) {
	var el = document.getElementById(parentID);
	if (el) {
		el = el.getElementsByTagName(tag);
		for (var i=0; i < el.length; i++) {
			el[i].onmouseover = function() {
				this.className += " "+ hoverClass;
			}
			el[i].onmouseout = function() {
				this.className = this.className.replace
				(new RegExp(" "+ hoverClass +"\\b"), "");
			}
		}
	}
}

attachHoverClass = function() {
	fnSetHoverClass("topnav", "li", "over");
	fnSetHoverClass("leftnav", "li", "over");
}

if(browser.platform != 'mac' && browser.ie) {
	window.onload = attachHoverClass;
}