Internet Explorer 9 Drag and Drop (DnD)

I’ve found a workarround to make the native dnd api also work in IE with elements other than links and images. Add a onmousemove handler to the draggable container and call the native IE function element.dragDrop(), when the button is pressed:

function handleDragMouseMove(e) {
    var target = e.target;
    if (window.event.button === 1) {
        target.dragDrop();
    }
}

var container = document.getElementById('widget');
if (container.dragDrop) {
    $(container).bind('mousemove', handleDragMouseMove);
}

// todo: add dragstart, dragover,... event handlers