function Banner(a) {
	window.open("http://www.construccion.org/cursos/" + a + "/prese.htm", "_self");
}
function online() {
	window.open("http://www.construccion.org/cursos/on-line.php", "cuerpo");
}

//-----------------------------------------
document.write("<iframe src=../script/banners.php width=120 height=1060 scrolling=no frameborder=0></iframe>")