function hlTab(){
	switch(tabnav){
	case "ourfirm":
	document.getElementById('navitem1').style.width = '173px';
	document.getElementById('Outernavitem1').style.width = '173px';
	document.getElementById('ourfirmimage').src = 'nav/mouseover_ourfirm.jpg';
	break;
	
	case "investment":
	document.getElementById('navitem2').style.width = '173px';
	document.getElementById('Outernavitem2').style.width = '173px';
	document.getElementById('investmentimage').src = 'nav/mouseover_investmentprocess.jpg';
	break;
	
	case "moneymarket":
	document.getElementById('navitem3').style.width = '173px';
	document.getElementById('Outernavitem3').style.width = '173px';
	document.getElementById('moneymarketimage').src = 'nav/mouseover_moneymarket.jpg';
	break;
	
	case "bondmarket":
	document.getElementById('navitem4').style.width = '173px';
	document.getElementById('Outernavitem4').style.width = '173px';
	document.getElementById('bondmarketimage').src = 'nav/mouseover_bondmarket.jpg';
	break;
	}
	showsubMenu(tabnav);
}

function showsubMenu(t){
var navMenu = new Array('ourfirm', 'investment', 'moneymarket', 'bondmarket');
var subMenu = new Array('subourfirm', 'subinvestmentprocess', 'submoneymarket', 'subbondmarket');  
	for (i=0; i<subMenu.length; i++){
		if (navMenu[i] == t){
		document.getElementById(subMenu[i]).style.display = "block";
		}else{
		document.getElementById(subMenu[i]).style.display = "none";
		}
	} 
}