var ec;
var ec_size = ec_size.split('x');
var ec_keywords = encodeURIComponent(ec_keywords);
document.write('<iframe frameborder="0" scrolling="no" width="' + ec_size[0] + '" height="' + ec_size[1] + '" src="http://omg.esprit-click.com/display.php?ec=' + ec + '&ec_k=' + ec_keywords + '"></iframe>');