Function to create iframes with ease

create_if.js

function createIframe(id, targetEle, src, content, style){
  var iframe = document.createElement('iframe');
  (iframe.frameElement || iframe).style.cssText = style || "width: 0; height: 0; border: 0";
  iframe.id = id;
  iframe.src = src || "javascript:false";
  $(targetEle).append(iframe);

  if(src) return iframe;

  var doc = iframe.contentWindow.document;
  doc.open().write(content);
  doc.close();
  return iframe;
}