function maximiza()
{
	window.moveTo(0,0);
	if (document.all) {
		top.window.resizeTo(screen.availWidth,screen.availHeight);
		}
	else if (document.layers||document.getElementById) {
	if (top.window.outerHeight<screen.availHeight||top.window.outerWidth<screen.availWidth)
		{
		top.window.outerHeight = screen.availHeight;
		top.window.outerWidth = screen.availWidth;
		}
	}
}
function abrirVentana(theURL,winName,features) { 
  window.open(theURL,winName,features);
}
function cerrarPrincipal()
{
var ventana = window.self;
ventana.opener = window.self;
ventana.close();
}
function resize()
{
	resizeTo(400,300);
}