function my_resize(){
    var pics;
    pics = document.getElementsByTagName("img");
    for(var i = 0; i < pics.length; i++){
        
    
    
    if((pics[i].getAttribute("class") == "secondarythumb_image")){
        
    var newImg = new Image();
    newImg.src = pics[i].getAttribute("src");
    var height = newImg.height;
    var width = newImg.width;
    
        
     if(height > width){   
    pics[i].style.height = "164px";
    pics[i].style.width = "auto";
    
     }
     
     if(height < width){   
    pics[i].style.width = "220px";
    pics[i].style.height = "auto";
    
     }
    

     
     
     
     
     
    }
    }
}

window.onload = my_resize;