var explorer = navigator.userAgent.indexOf('MSIE') != -1 ? true : false;
var currentSubMenuElm;

function showMySubMenu(elm) {
	if (explorer) {
		hideSubMenu();
		currentSubMenuElm=elm.getElementsByTagName('ul')[0];
		currentSubMenuElm.style.display='block';
	}
}

function hideSubMenu() {
	if (explorer) {
		if (currentSubMenuElm) {
			currentSubMenuElm.style.display='none';
			currentSubMenuElm=null;
		}
	}
}

function over(elm) {
	if (explorer)
		elm.className='over';
}

function out(elm) {
	if (explorer)
		elm.className='';
}

function go(elm) {
	var link=elm.getElementsByTagName('a')[0];	
	window.location=link.href;
	return false;
}

function goNw(elm) {	// new window
	var link=elm.getElementsByTagName('a')[0];	
	window.open(link.href);
	return false;
}