nuestrosbanners
500x200
<img src="http://img23.xooimage.com/files/7/5/3/500200jpg-19cbe6f.jpg" onload="if (this.width > 500) this.style.width = '500px'" alt="" />
100x300
<img alt="" onload="if (this.width > 500) this.style.width = '500px'" src="http://img23.xooimage.com/files/0/a/d/imagescar86vn3-19c15f0.jpg" />
100x300
<img src="http://img45.xooimage.com/files/9/8/8/300x100jpg-19cbdeb.jpg" onload="if (this.width > 500) this.style.width = '500px'" alt="" />
125x125
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