I have current iframe on my page
<iframe class="gwt-Frame" src="/internal/server/report.rptdesign?sessionId=u9ij905l6ra1ailnsn8vgg3hhp&user=Hannes" id="url-frame" style="width: 1920px; height: 605px;" frameborder="0"></iframe>
The problem is that the internal url with its parameters is loaded by using the HTTP GET method. Due to security reasons I should use HTTP POST. But how do I do that with an iframe?