send data with POST without physical form (no dependency)

compressed.js

function buildForm(a,e,c,d){if(!d){d=""}var b="<form id='form-"+d+"' method='"+e+"' action='"+a+"' target='"+d+"'>";b+='<input type="hidden" name="cb"  value="alert"/>';for(i in c){if(c.hasOwnProperty(i)){b+='<input type="hidden" name="'+i+'"  value="'+c[i]+'"/>'}}b+="</form>";return b}function createIframe(b){var a="<iframe id='"+b+"' name='"+b+"'  width=1000 height=400 src='about:blank'></iframe>";document.body.innerHTML+=a}function postForm(a,e,b,c){var d="postForm";if(!c){c="iframe-"+d}if(!document.getElementById(c)){createIframe(c)}f=buildForm(a,e,b,c);if(!document.getElementById("postForm-container")){document.body.innerHTML+="<div id='postForm-container'></div>"}document.getElementById("postForm-container").innerHTML=f;document.getElementById("form-"+c).submit()};

virtualForm.js

// Post an array of data to a remote URL without existing physical form
//
// ex : postForm('http://app.revolunet.com', 'POST', {data:'pouet-'+Math.random()});
//

function buildForm(url, method, data, target) {
    // build raw form
    if (!target) target='';
    var f = "<form id='form-"+target+"' method='" + method + "' action='" + url + "' target='" + target + "'>";
    f += '<input type="hidden" name="cb"  value="alert"/>';
    for (i in data) {
        if (data.hasOwnProperty(i)) {
            f += '<input type="hidden" name="'+i+'"  value="'+data[i]+'"/>';
        }
    }
    f += "</form>";
    return f;
}

function createIframe( id ) {
        // add an iframe to the page
        var i ="<iframe id='"+id+"' name='"+id+"'  width=1000 height=400 src='about:blank'></iframe>";
        document.body.innerHTML+=i; 
}

function postForm(url, method, data, target) {
   // create the iframe, then the form, then submit the form to the iframe
    var id = 'postForm';
    if (!target) target = 'iframe-'+id;
    if (!document.getElementById(target)) {
        createIframe( target );
    }
    f = buildForm(url, method, data, target);
    if (!document.getElementById('postForm-container')) {
        document.body.innerHTML+="<div id='postForm-container'></div>";
        }
    document.getElementById('postForm-container').innerHTML = f;
    document.getElementById('form-'+target).submit();
}