var lastmenu;

function menu_show(num) {
	if(lastmenu!=null) {
		document.getElementById('sub'+lastmenu).style.visibility='hidden';
	}
	if(document.getElementById('sub'+num)) {
		document.getElementById('sub'+num).style.visibility='visible';
		lastmenu=num;
	}
}

function switchblock(id) {
	if(document.getElementById('block'+id)) {
		document.getElementById('block'+id).style.display=(document.getElementById('block'+id).style.display=='block')?'none':'block';
	}
}


function deadlink(num) {
	document.forms[1].elements['doc'].value=num;
}

function jumpTo(loc){
    return location.href = "#"+ loc;
}