function banner() { 
}; 
banner = new banner(); 
number = 0; 
 
// bannerArray
 
//banner[number++] = "<table width='300' height='200' border='0' align='center' cellpadding='0' cellspacing='0'><tr><td><div align='center'><a href='modelos/index.php?modulo=1&id=0'><img src='_images/modelos/lizbeth-cortez-index.jpg' alt='Lizbeth Cortez' width='290' height='170' border='0'></a></div></td></tr><tr><td><div align='center' class='Letra-Amarilla'>Lizbeth Cortez</div></td></tr></table>"

banner[number++] = "<table width='300' height='200' border='0' align='center' cellpadding='0' cellspacing='0'><tr><td><div align='center'><a href='modelos/index.php?modulo=1&id=1'><img src='_images/modelos/maria-paz-index.jpg' alt='Maria Paz' width='290' height='170' border='0'></a></div></td></tr><tr><td><div align='center' class='Letra-Amarilla'>Maria Paz</div></td></tr></table>"

banner[number++] = "<table width='300' height='200' border='0' align='center' cellpadding='0' cellspacing='0'><tr><td><div align='center'><a href='modelos/index.php?modulo=1&id=2'><img src='_images/modelos/luisa-fernanda-index.jpg' alt='Luisa Fernanda' width='290' height='170' border='0'></a></div></td></tr><tr><td><div align='center' class='Letra-Amarilla'>Luisa Fernanda</div></td></tr></table>"

banner[number++] = "<table width='300' height='200' border='0' align='center' cellpadding='0' cellspacing='0'><tr><td><div align='center'><a href='modelos/index.php?modulo=1&id=4'><img src='_images/modelos/laura-moreno-index.jpg' alt='Laura Moreno' width='290' height='170' border='0'></a></div></td></tr><tr><td><div align='center' class='Letra-Amarilla'>Laura Moreno</div></td></tr></table>"

increment = Math.floor(Math.random() * number); 
document.write(banner[increment]);