jquery pictures are not completely proportional to automatically shrink the simple code _jquery

Copy code code as follows:

JQuery (document). Ready (function ()
{ 
/* Picture not fully proportional auto reduction * *  
$ (window). Load (function () {$ (' #content div.thumbnail img '). each (function () { var x =  200; 
//fill in the target picture width
 var y = 140; 
//fill in the target picture height
 var w=$ ( This). Width (),  h=$ (this). Height ();
//Get picture width, height  
if  (w > x)  { 
//Picture width greater than target width  
Var w_ original=w, h_original=h; h = h *  (X / W);
 //Height According to the target width  w =x;
 //Width is equal to the predetermined width  if  (h < y)  { 
///If the height is smaller than the predetermined height when scaled down by
 w =  w_original *  (y /h_original); 
//-recalculate width by target height  h = y;
 //height is equal to the predetermined height  
} 
}
$ (this). attr ({width:w,height:h});  }); }); });