function hideMenu() {
	//get ie version
	var temp = navigator.appVersion.split('MSIE');
	// Parse the string for the "6" in 6.0
	var ieVer = parseInt(temp[1]);
	if(ieVer == 6) {
		var subMenu = $('sub_menu');
		if(subMenu) {
			subMenu.setStyle('display', 'none');
		}
	}
}

window.addEvent('domready', function(){
	$('nav').getElements('.first').addEvents({
		'mouseenter': function(){
			this.getFirst('a').setProperty('class','hovering');
			this.setProperty('class','first sfhover');
		},
		'mouseleave': function(){
			this.getFirst('a').setProperty('class','hovering-no');
			this.setProperty('class','first');
		}
	});
	
	 hideMenu();
});