var sub_actual;

function show_sub(id) {
	if (sub_actual!=null) {
		document.getElementById('submenu'+sub_actual).style.display = 'none';	
	}
	
	document.getElementById('submenu'+id).style.display = 'block';
	sub_actual = id;
}

function show_sub_conocimientos(id) {
	if (sub_actual!=null) {
		document.getElementById('submenu1'+sub_actual).style.display = 'none';	
	}
	
	document.getElementById('submenu1'+id).style.display = 'block';
	sub_actual = id;
}

function introtext(text,textb)
{
	LeftPosition = (screen.width) ? (screen.width - 505) / 2 : 0;
	TopPosition = (screen.height) ? (screen.height - 453) / 2 : 0;
	editor = window.open('intro.asp?text='+text+'&textb='+textb+'','','width=505,height=453,scrollbars=no,mainbar=no,statusbar=no,left='+LeftPosition+',top='+TopPosition+'');
}

function show_c(id) {
	document.getElementById('change_'+id).style.display = 'block';
}