document.write("<table width=600 border=0 cellspacing=0 cellpadding=0><tr>")
document.write("<td class=cuadro height=8 width=20%></td>")
document.write("<td class=cuadro height=8 width=23%><div align=center>&nbsp;</div></td>")
document.write("<td class=cuadro height=8 width=19% valign=middle><div align=center>&nbsp;</div></td>")
document.write("<td class=cuadro height=8 width=23% valign=middle><div align=center>&nbsp;</div></td>")
document.write("<td class=cuadro height=8 width=19%></td>")
document.write("</tr></table>")