function getBrowserWidth() {
    if (self.innerWidth) return self.innerWidth;
    return document.documentElement.offsetWidth;
}
	
function getBrowserHeight() {
    if (self.innerHeight) return self.innerHeight;
    return document.documentElement.offsetHeight;
}
		
start_menu = function() {
  if (document.all&&document.getElementById) {
    navRoot = document.getElementById("menu");
    for (i=0; i<navRoot.childNodes.length; i++) {
      node = navRoot.childNodes[i];
      if (node.nodeName=="LI") {
        node.onmouseover=function() {
          this.className+=" over";
        }
	
        node.onmouseout=function() {
          this.className=this.className.replace(" over", "");
        }
      }
    }
  }
}