/* gestion visuels homepage */
function split(num){
	document.getElementById('visual').className = "visual" + num;	
	if (num == 0){
		for (i = 1 ; i < 8; i++){
			if (i != num) document.getElementById('bubble' + i).className = "bubble"  + i;	
		}
	}else{
		for (i = 1 ; i < 8; i++){
			if (i != num) document.getElementById('bubble' + i).className = "bubble"  + i + " off";	
		}
	}
}