function showTrail (id, leftr, topr) {
	document.getElementById("calendar_item_" + id).style.visibility = "visible";
	document.getElementById("calendar_item_" + id).style.left = leftr;
	document.getElementById("calendar_item_" + id).style.top = topr;
}

function leaveTrail (id) {
	document.getElementById("calendar_item_" + id).style.visibility = "hidden";
}

function showTrailHelp () {
	document.getElementById("calendar_item_ajuda").style.visibility = "visible";
	document.getElementById("calendar_item_ajuda").style.left = 209;
	document.getElementById("calendar_item_ajuda").style.top = 316;
}

function leaveTrailHelp () {
	document.getElementById("calendar_item_ajuda").style.visibility = "hidden";
}

function janela(arquivo,largura,altura) {
window.open(arquivo, 'floats', 'scrollbars=no,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,width=' + largura + ',height=' + altura + ',left=15,top=15');
}

function janelafixa(arquivo,largura,altura) {
window.open(arquivo, 'floats', 'scrollbars=no,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,width=' + largura + ',height=' + altura + ',left=15,top=15');
}

function janelafull(arquivo,largura,altura) {
window.open(arquivo, 'floats', 'scrollbars=no,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,fullscreen=yes,width=' + largura + ',height=' + altura + ',left=15,top=15');
}

function janelasscroll(arquivo,largura,altura) {
window.open(arquivo, 'floats', 'scrollbars=yes,toolbar=no,location=no,directories=no,status=yes,menubar=no,resizable=yes,width=' + largura + ',height=' + altura + ',left=50,top=50');
}