var style = 'menu'
var folder = 'iconos/'
document.write('<table align="left" bgcolor="000000" border="0" cellspacing="0" cellpadding="0"><tr><td><img height="2" src="negro.gif"></td></tr>');
if (url != false) {
document.write('<tr>'), tabla(), document.write('</tr><tr><td><img height="2" src="negro.gif"></td></tr>');}
document.write('<tr>'), principal(), document.write('</tr><tr><td><img height="2" src="negro.gif"></td></tr>');
if (window.print) {
document.write('<tr>'), imprimir(), document.write('</tr><tr><td><img height="2" src="negro.gif"></td></tr>');}
if (history.length >= 1) {
document.write('<tr>'), atras(), document.write('</tr><tr><td><img height="2" src="negro.gif"></td></tr>');}
document.write('</table>');