// JavaScript Document
function getElementsByClassName(oElm, strTagName, strClassName){
	var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}

//To get all a elements in the document with a “info-links” class. 
//   getElementsByClassName(document, "a", "info-links"); 
// To get all div elements within the element named “container”, with a “col” class. 
//   getElementsByClassName(document.getElementById("container"), "div", "col"); 
// To get all elements within in the document with a “click-me” class. 
//   getElementsByClassName(document, "*", "click-me"); 

startList = function() {
if (document.all) {
navRoot = getElementsByClassName(document, "*", "main_nav")[0];
// navRoot = document.getElementById("main_nav");
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", "");
   }
   }
  }
 }
}
window.onload=startList;