//alert('plan '+formplan);
// Set path to the iframe file
var filePath = "http://www.colombiatudestino.com/modular/modulos/valida_form/inscripcion_cli.php?fplan=";
// Setup the iframe target
var iframe='<iframe id="frame" name="widget" src ="#" width="100%" height="1" marginheight="0" marginwidth="0" frameborder="no" scrolling="no"></iframe>';
// Write the iframe to the page
document.write(iframe);

var myIframe = parent.document.getElementById("frame");
// Setup the width and height
myIframe.height = formheight;
myIframe.width = formwidth;

myIframe.src = filePath+formplan+"&";
// set the style of the iframe
myIframe.style.border = "0px solid #999";
myIframe.style.padding = "0px";