Function moveAction

static/editor.md/editormd.js:4472–4505

(e)

            };

            var moveAction = function (e) {
                e = e || window.event;  //IE

                var left, top, nowLeft = parseInt(dialog[0].style.left), nowTop = parseInt(dialog[0].style.top);

                if( nowLeft >= 0 ) {
                    if( nowLeft + dialog.width() <= $(window).width()) {
                        left = e.clientX - posX;
                    } else {	
                        left = $(window).width() - dialog.width();
                        document.onmousemove = null;
                    }
                } else {
                    left = 0;
                    document.onmousemove = null;
                }

                if( nowTop >= 0 ) {
                    top = e.clientY - posY;
                } else {
                    top = 0;
                    document.onmousemove = null;
                }


                document.onselectstart = function() {
                    return false;
                };

                userUnselect($("body"));
                userUnselect(dialog);
                dialog[0].style.left = left + "px";
                dialog[0].style.top  = top + "px";
            };

            document.onmouseup = function() {                            
                userCanSelect($("body"));