function toggle_dropmenu(id){
	count = 1;
	while (count <= 28){
	var step = id+'_'+count;
	if (document.getElementById(step)){
	document.getElementById(step).style.display = (document.getElementById(step).style.display == 'block') ? 'none' : 'block';
	}
	count++;
	}
	}
	
	function roll_dropmenu(id, roll_class){
	document.getElementById(id).className = roll_class;
	}