function(r) {
	    this.x += r.x;
	    this.y += r.y;
	    this.width += r.width;
	    this.height += r.height;
	    return this;
        }
function(r) {
	    this.x += r.x;
	    this.y += r.y;
	    this.width += r.width;
	    this.height += r.height;
	    return this;
        }
function ( r ) { this . x += r . x ; this . y += r . y ; this . width += r . width ; this . height += r . height ; return this ; }
Move and expand me. @param r {rectangle} representing deltas
Move and expand me .