$('img').on("touchstart",function(E){

                            //E.preventDefault();E.stopPropagation();

                            var el=this;var me=$(this);$("#tip").text("in touchstart");

                            var t=E.touches[0];

                            console.log("touchstart!,mx,my=(",t.pageX,",",t.pageY,") ,el.x,y=(",el.offsetLeft,",",el.offsetTop,")" );

                                    me.data("mx",t.pageX);me.data("my",t.pageY);

                                    me.data("ex",el.offsetLeft);me.data("ey",el.offsetTop);

                        })

                        .on('touchmove',function(E){E.preventDefault();E.stopPropagation();

                            console.log("touchmove");var el=this;var me=$(this);

                            var t=E.touches[0];

                            var mx=parseInt(me.data("mx")),my=parseInt(me.data("my"));

                            var ex=parseInt(me.data("ex")),ey=parseInt(me.data("ey"));

                            console.log("or mx,my, new mx,my or ex,ey=",mx,my,t.pageX,t.pageY,ex,ey)

                            var nx=ex+t.pageX - mx , ny=ey+t.pageY-my

                            console.log("dest x,y=",nx,",",ny)

                            $("#tip").text("in touch move : "+"or mx,my, new mx,my or ex,ey="+mx+","+my+","+t.pageX+","+t.pageY+","+ex+","+ey+" dest x,y="+nx+","+ny);

                            me.css({"left":nx+"px","top":ny+"px"}) ;

                        })

                        .on('touchend',function(E){

                            //E.preventDefault();E.stopPropagation();

                             console.log('touchend');var el=this;var me=$(this);

                        });

                        $('img').on('longTap',function(){$.ui.actionsheet(

                            [{

                                text: 'back',

                                cssClasses: 'red',

                                handler: function () {

                                    alert("Clicked Back")

                                }

                            }, {

                                text: 'Alert Hi',

                                cssClasses: 'blue',

                                handler: function () {

                                    alert("Hi");

                                }

                            }, {

                                text: 'Alert Goodbye',

                                cssClasses: '',

                                handler: function () {

                                    alert("Goodbye");

                                }

                            }]

                        );

                        });