onMouseMove=function(){

        dx=_xmouse-mov._x;

        dy=_ymouse-mov._y;

        mov._height=Math.sqrt(dx*dx+dy*dy);

}

function qwerty() {

        var dx = _xmouse - this._x;

        var dy = _ymouse - this._y;

        this._height = Math.sqrt(dx*dx + dy*dy);

        var angle = Math.atan2(_ymouse - this._y, _xmouse - this._x);

        this._rotation = angle * radians;

        updateAfterEvent();

}