drag(oDiv,sent);

var dmW = document.documentElement.clientWidth || document.body.clientWidth;
var dmH = document.documentElement.clientHeight || document.body.clientHeight;


var sent = sent || {};
var l = sent.l || 0;
var r = sent.r || dmW - obj.offsetWidth;
var t = sent.t || 0;
var b = sent.b || dmH - obj.offsetHeight;
var n = sent.n || 10;

obj.onmousedown = function (ev){
    var oEvent = ev || event;
    var sentX = oEvent.clientX - obj.offsetLeft;
    var sentY = oEvent.clientY - obj.offsetTop;
    document.onmousemove = function (ev){
        var oEvent = ev || event;

        var slideLeft = oEvent.clientX - sentX;
        var slideTop = oEvent.clientY - sentY;

        if(slideLeft <= l){
            slideLeft = l;
        }
        if(slideLeft >= r){
            slideLeft = r;
        }
        if(slideTop <= t){
            slideTop = t;
        }
        if(slideTop >= b){
            slideTop = b;
        }

        obj.style.left = slideLeft + 'px';
        obj.style.top = slideTop + 'px';
    }

    document.onmouseup = function (){
        document.onmousemove = null;
        document.onmouseup = null;
    }

    return false;
}