Draggable DIV using javascript [closed]

Question

I want to make Draggable div i know this can be done using Jquery plug in but I don't want to use because I just need only draggable function. so how can I make draggable function I have did this

$(document).ready(function(e){
                $("#eve").mousemove(function(e){
                    var p=$(this);
                    var offset = p.offset();
                    var ol=offset.left;
                    var ot=offset.top;
                    var l=e.pageX-ol;
                    var t=e.pageY-ot;
                    var eX=e.pageX;
                    var eY=e.pageY;
                    var htm="left:"+ol+" top:"+ot+"<br/>";
                    htm+="eX:"+eX+" eY:"+eY+"<br/>";
                    htm+="curX:"+l+" curY:"+t+"<br/>";
                    htm+="l:"+(ol-l)+" t:"+(ot-t);
                    p.html(htm);
                   p.css({left:((eX-3))+"px",top:((eY-3))+"px"});
                });

Answer 1

Here is my fast improvisation. Maybe this is exactly you are looking for.

$("div").on({
    mousemove: function(e) {
        var el = $(this);
        var data = el.data("down");
        if (data) {
            el.css({
                left: e.pageX - data.left,
                top: e.pageY - data.top
            });
        }
    },
    mousedown: function(e) {
        var el = $(this);
        var pos = el.offset();
        el.data("down", {
            left: e.pageX - pos.left,
            top: e.pageY - pos.top
        });
    },
    mouseup: function() {
        $(this).data("down", false);
    }
});​

DEMO: http://jsfiddle.net/UBKBb/