// Menu style functions

function activateMenuItem(actItem) {
	for (var i=0; i<document.getElementById('navigation').getElementsByTagName('a').length; i++) {
		if (document.getElementById('navigation').getElementsByTagName('a')[i] == actItem) {
			addClass(document.getElementById('navigation').getElementsByTagName('a')[i],'current'+(i+1));
		} else {
			removeClass(document.getElementById('navigation').getElementsByTagName('a')[i],'current'+(i+1));
		}
	}
	document.getElementById('maincontent').src = actItem.href;
	return false;
}
function hasClass(ele,cls) {
	return ele.className.match(new RegExp('(\\s|^)'+cls+'(\\s|$)'));
}

function addClass(ele,cls) {
	if (!this.hasClass(ele,cls)) ele.className += " "+cls;
}

function removeClass(ele,cls) {
	if (hasClass(ele,cls)) {
    	var reg = new RegExp('(\\s|^)'+cls+'(\\s|$)');
		ele.className=ele.className.replace(reg,' ');
	}
}