// JavaScript Document

function ActivateDropDowns() {
	var menu;
	var menus = new Array();
	menus[0] = new Array( document.getElementById("spaceLink"),
						   document.getElementById("spaceLinkSub") );
	menus[1] = new Array( document.getElementById("emLink"),
						   document.getElementById("emLinkSub") );
	menus[2] = new Array( document.getElementById("photonicsLink"),
						   document.getElementById("photonicsLinkSub") );
	menus[3] = new Array( document.getElementById("embeddedLink"),
						   document.getElementById("embeddedLinkSub") );
	menus[4] = new Array( document.getElementById("computerLink"),
						   document.getElementById("computerLinkSub") );					   
	menus[5] = new Array( document.getElementById("networkingLink"),
						   document.getElementById("networkingLinkSub") );
	menus[6] = new Array( document.getElementById("wirelessLink"),
						   document.getElementById("wirelessLinkSub") );
	menus[7] = new Array( document.getElementById("powerLink"),
						   document.getElementById("powerLinkSub") );
	menus[8] = new Array( document.getElementById("biomedicalLink"),
						   document.getElementById("biomedicalLinkSub") );
						   	
	for(m in menus) {
		AssignHandlers(menus[m][0], menus[m][1], m)
	}
}

function AssignHandlers (topm, subm, m) {
	var topmLinks = topm.getElementsByTagName('a');
	var topmLink = topmLinks[0];
	
	topmLink.href = "#";
			
	var oddClick = function () {
		subm.className = 'subliAct';
		topm.className = 'topliAct';
		topmLink.onclick = function () {
			subm.className = 'subli';
			topmLink.onclick = oddClick;
			topm.className = 'topli';
			return false;
		}
		return false;
	}
	
	topmLink.onclick = oddClick;
}

window.onload = ActivateDropDowns;