drag drop prototype

gistfile1.js

var target = document.getElementById('#myDraggableElement');

target.onmousedow = function(){
    // start dragging
    
    window.onmousemove = function(){
        // move window
    };
    
    window.onmouseup = function(){
        // stop dragging
        // unbind window.onmousemove
        // unbind window.onmouseup
    };
};