var localClass;
function changeClass(id) {
	var obj = document.getElementById(id);
	var menu;
	for (var i = 0; i < 6; i += 1) {
		menu = document.getElementById("menu" + i);
		menu.className = "menu" + i;
	}
	obj.className = obj.id + "_l";
	localClass = obj.className;
}

function mouseOut(id) {
	var obj = document.getElementById(id);
	obj.className = localClass;
	localClass = null;
}

function mouseOver(id) {
	var obj = document.getElementById(id);
	localClass = obj.className;
	if (obj.className == obj.id) {
		obj.className = obj.className + "_l";
	}
}
/**
* @returns A string which specifies which is the current
* browser in which we are running.
*
* Currently-supported browser detection and codes:
* * 'opera' -- Opera
* * 'msie' -- Internet Explorer
* * 'safari' -- Safari
* * 'firefox' -- FireFox
* * 'mozilla' -- Mozilla
*
* If we are unable to property identify the browser, we
* return an empty string.
*
* @type String
*/
function getBrowserName() {
	var browserName = "";
	
	var ua = navigator.userAgent.toLowerCase();
	if ( ua.indexOf( "opera" ) != -1 )
	{
		browserName = "opera";
		} else if ( ua.indexOf( "msie" ) != -1 ) {
		browserName = "msie";
		} else if ( ua.indexOf( "safari" ) != -1 ) {
		browserName = "safari";
		} else if ( ua.indexOf( "mozilla" ) != -1 ) {
		if ( ua.indexOf( "firefox" ) != -1 ) {
		browserName = "firefox";
		} else {
		browserName = "mozilla";
		}
	}
	
	return browserName;
};