jQuery.fn.x = function(n) {
    var result = null;
    this.each(function() {
      var o = this;
      if (n === undefined) {
        var x = 0;
        if (o.offsetParent) {
          while (o.offsetParent) {
            x += o.offsetLeft;
            o = o.offsetParent;
          }
        }
        if (result === null) {
          result = x;
        } else 
          {result = Math.min(result, x);}
           } else 
              {o.style.left = n + 'px';
           }
       });
       return result;
      };

jQuery.fn.y = function(n) {
    var result = null;
    this.each(function() {
      var o = this;
      if (n === undefined) {
        var y = 0;
        if (o.offsetParent) {
          while (o.offsetParent) {
            y += o.offsetTop;
            o = o.offsetParent;
          }
        }
        if (result === null) {
          result = y;
        } else 
          {result = Math.min(result, y);}
           } else 
              {o.style.top = n + 'px';
           }
       });
       return result;
      };