function pre_flash_js(flash_nombre,flash_ancho,flash_alto)
{
document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0" width="');
document.write(flash_ancho);
document.write('" height="');
document.write(flash_alto);
document.write('">\n');
document.write('<param name=movie value="');
document.write(flash_nombre);
document.write('">\n');
document.write('<param name=quality value=high>\n');
document.write('<embed src="');
document.write(flash_nombre);
document.write('" quality=high pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="');
document.write(flash_ancho);
document.write('" height="');
document.write(flash_alto);
document.write('">\n');
document.write('</embed> \n');
document.write('</object>\n');
}