// JavaScript Document
sfHover = function() {
    var sfEls = document.getElementById("nav").getElementsByTagName("LI");
    for (var i = 0; i < sfEls.length; i++) {
        sfEls[i].onmouseover = function() {
            this.className += (this.className.length > 0 ? " " : "") + "sfhover";
        }
        sfEls[i].onmouseout = function() {
            this.className = this.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
        }
    }
}
mcAccessible = function() {
    var mcEls = document.getElementById("nav").getElementsByTagName("A");
    for (var i = 0; i < mcEls.length; i++) {
        mcEls[i].onfocus = function() {
            this.className += (this.className.length > 0 ? " " : "") + "sffocus"; //a:focus
            this.parentNode.className += (this.parentNode.className.length > 0 ? " " : "") + "sfhover"; //li < a:focus
            if (this.parentNode.parentNode.parentNode.nodeName == "LI") {
                this.parentNode.parentNode.parentNode.className += (this.parentNode.parentNode.parentNode.className.length > 0 ? " " : "") + "sfhover"; //li < ul < li < a:focus
                if (this.parentNode.parentNode.parentNode.parentNode.parentNode.nodeName == "LI") {
                    this.parentNode.parentNode.parentNode.parentNode.parentNode.className += (this.parentNode.parentNode.parentNode.parentNode.parentNode.className.length > 0 ? " " : "") + "sfhover"; //li < ul < li < ul < li < a:focus
                }
            }
        } 
        mcEls[i].onblur=function() {
            this.className=this.className.replace(new RegExp("( ?|^)sffocus\\b"), "");
            this.parentNode.className=this.parentNode.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
            if(this.parentNode.parentNode.parentNode.nodeName == "LI") {
                this.parentNode.parentNode.parentNode.className=this.parentNode.parentNode.parentNode.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
                if(this.parentNode.parentNode.parentNode.parentNode.parentNode.nodeName == "LI") {
                    this.parentNode.parentNode.parentNode.parentNode.parentNode.className=this.parentNode.parentNode.parentNode.parentNode.parentNode.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
                }
            }
        } 
    }
}
// only ie needs the sfHover script. all need the accessibility script...
// thanks http://www.brothercake.com/site/resources/scripts/onload/
if(window.addEventListener) window.addEventListener('load', mcAccessible, false); // gecko, safari, konqueror and standard
else if(document.addEventListener) document.addEventListener('load', mcAccessible, false); // opera 7
else if(window.attachEvent) { // win/ie
    window.attachEvent('onload', sfHover);
    window.attachEvent('onload', mcAccessible);
} else { // mac/ie5
    if(typeof window.onload == 'function') {
        var existing = onload;
        window.onload = function() {
            existing();
            sfHover();  
            mcAccessible();
       }
    } else {
        window.onload = function() {
            sfHover();
            mcAccessible();
        }
    }
}