function toggle(div_id) {
	var el = document.getElementById(div_id);
	if ( el.style.display == 'none' ) {	el.style.display = 'block';}
	else {el.style.display = 'none';}
}

function hidebut(elm,series) {
	
	if (series == 'Diablo') series = 2;
	else if (series == 'Ultima') series = 1;
	else series = 0;
	
	states=new Array();
	states[0]=new Array(1);
	states[1]=new Array(2);
	states[2]=new Array(3);
	states[0][0]="sys-1";
	states[1][0]="sys-2";
	states[1][1]="sys-3";
	states[2][0]="sys-4";
	states[2][1]="sys-5";
	states[2][2]="sys-6";
	
	for (var i = 0; i < states[series].length; i++) {
		var layer = document.getElementById(states[series][i]);
		if (layer) {
			if (elm!= states[series][i]) {
				layer.style.display = "none";
			}
			else {
				layer.style.display = "block";
			}
		}
	}
}