function menuFix() {
          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].onMouseDown = function() {
                  this.className += (this.className.length > 0 ? " " : "") + "sfhover";
              }
              sfEls[i].onMouseUp = function() {
                  this.className += (this.className.length > 0 ? " " : "") + "sfhover";
              }
              sfEls[i].onmouseout = function() {
                  this.className = this.className.replace(new RegExp("( ?|^)sfhover\\b"),"");
              }
          }
      }
      window.onload = menuFix;