EXTがエラーを示していない---ソリューションバックアップ

(function(){   
	 var libFlyweight;    
	 function fly(el) {       
	 	 if (!libFlyweight) {           
	 	 	 libFlyweight = new Ext.Element.Flyweight();       
	 	  }       
	 	 	   libFlyweight.dom = el;        
	 	 	   return libFlyweight;   
	  }    
	  Ext.lib.Dom.getXY =  function(el) {       
	  	 var p, pe, b, scroll, bd = (document.body || document.documentElement);        
	  	 el = Ext.getDom(el);        
	  	 if(el == bd){           
	  	 	 return [0, 0];       
	  	  }        
	  	  if (el.getBoundingClientRect) {           
	  	  	 try{ // LB's code                
	  	  	 	 b = el.getBoundingClientRect();           
	  	  	  }catch(ex){               
	  	  	  	 return [0,0];            
	  	  	  }            
	  	  	  scroll = fly(document).getScroll();            
	  	  	  return [b.left + scroll.left, b.top + scroll.top];        
	  	  }        
	  	  var x = 0, y = 0;        
	  	  p = el;        
	  	  var hasAbsolute = fly(el).getStyle("position") == "absolute";        
	  	  while (p) {            
	  	  	x += p.offsetLeft;            
	  	  	y += p.offsetTop;            
	  	  	if (!hasAbsolute && fly(p).getStyle("position") == "absolute") {                
	  	  		hasAbsolute = true;            
	  	  	}           
	  	  	 if (Ext.isGecko) {               
	  	  	 	 pe = fly(p);                
	  	  	 	 var bt = parseInt(pe.getStyle("borderTopWidth"), 10) || 0;                
	  	  	 	 var bl = parseInt(pe.getStyle("borderLeftWidth"), 10) || 0;                
	  	  	 	 x += bl;               
	  	  	 	  y += bt;                
	  	  	 	  if (p != el && pe.getStyle('overflow') != 'visible') {                    
	  	  	 	  	x += bl;                    
	  	  	 	  	y += bt;               
	  	  	 	  }            
	  	  	 }            
	  	  	 p = p.offsetParent;        
	  	 }       
	  	  if (Ext.isSafari && hasAbsolute) {            
	  	  	x -= bd.offsetLeft;           
	  	  	 y -= bd.offsetTop;        
	  	  }       
	  	   if (Ext.isGecko && !hasAbsolute) {           
	  	   	 var dbd = fly(bd);            
	  	   	 x += parseInt(dbd.getStyle("borderLeftWidth"), 10) || 0;            
	  	   	 y += parseInt(dbd.getStyle("borderTopWidth"), 10) || 0;       
	  	   }        
	  	   p = el.parentNode;        
	  	   while (p && p != bd) {           
	  	   	 if (!Ext.isOpera || (p.tagName != 'TR' && fly(p).getStyle("display") != "inline")) {                
	  	   	 	x -= p.scrollLeft;                
	  	   	 	y -= p.scrollTop;           
	  	    }            
	  	    p = p.parentNode;       
	  	   }       
	  	    return [x, y];    
	 }})();