diff --git a/lib/OpenLayers/Popup.js b/lib/OpenLayers/Popup.js
index dd6b50423a..4212e47b9c 100644
--- a/lib/OpenLayers/Popup.js
+++ b/lib/OpenLayers/Popup.js
@@ -192,11 +192,11 @@ OpenLayers.Popup.prototype = {
         
         if (this.div != null) {
             // for Mozilla and Safari
-    		this.div.style.opacity = this.opacity;
+            this.div.style.opacity = this.opacity;
 
             // for IE
-    		this.div.style.filter = 'alpha(opacity=' + this.opacity*100 + ')';
-    	}    	
+            this.div.style.filter = 'alpha(opacity=' + this.opacity*100 + ')';
+        }
     },  
     
     /**
@@ -209,7 +209,7 @@ OpenLayers.Popup.prototype = {
         
         if (this.div != null) {
             this.div.style.border = this.border;
-    	}
+        }
     },      
     
     /**