function init_meniuPrincipal(){
	var allDivs = document.getElementsByTagName('div');
	var menPrinc = new Array();
	for(var i = 0; i < allDivs.length; i++){
		if(allDivs[i].className == 'meniuPrincipal'){
			allDivs[i].onmouseover = meniuPrincipal_switch;
			allDivs[i].onmouseout = meniuPrincipal_switch;
		}
	}
}

function meniuPrincipal_switch(){
	if(this.className == 'meniuPrincipal')
		this.className = 'meniuPrincipalSelected';
	else
		this.className = 'meniuPrincipal';
}