function move_sel(value) {
	document.getElementById('selector').style.display='block';
	document.getElementById('selector').style.top=value+'px';
}

function hide_sel() {
	document.getElementById('selector').style.display='none';
}
	
function move_sel_port(value) {
	document.getElementById('selector').style.display='block';
	document.getElementById('selector').style.top=value+'px';
	document.getElementById('menuPort').style.display='none';
}

function hide_sel_port() {
	document.getElementById('selector').style.display='none';
	document.getElementById('menuPort').style.display='block';
}