ドラッグボックスをクリック

  $('#relatedNodeWindowContent .panel-heading').mousedown(function () {
                $(document).mousemove(function (ev) {
                    var event=window.event||ev;
                    $('#relatedNodeWindowContent').css('left',event.clientX-$('#relatedNodeWindowContent').width()/2+"px");
                    $('#relatedNodeWindowContent').css('top',event.clientY-$('#relatedNodeWindowContent .panel-heading').height()/2+"px");
                });
                $(document).mouseup(function (){
                    $(document).unbind('mousemove');
                    $(document).unbind('mouseup');
                });
            });