startList = function() {   
    if (document.all&&document.getElementById) {
	navRoot = document.getElementById("section_navigation");		
	for (i=0; i<navRoot.childNodes.length; i++) {
	      node = navRoot.childNodes[i];	      
	      if (node.nodeName=="LI") {
		node.onmouseover=function() {
		    this.className="hover";
		}	
		node.onmouseout=function() {	
		    this.className="";
		}
	    }
	}	    
    }
}
addEvent(window, 'load', startList);