Drag & Drop HTML5 - full example http://jsfiddle.net/WhL38/8/

dragAndDropHtml5.js

function allowDrop(ev) {
    ev.preventDefault();
}

function drag(ev) {
    ev.dataTransfer.setData("Text",ev.target.id);
}

function drop(ev) {
    ev.preventDefault();
    var data=ev.dataTransfer.getData("Text");
    ev.target.appendChild(document.getElementById(data));
}