diff --git a/lib/OpenLayers/BaseTypes.js b/lib/OpenLayers/BaseTypes.js
index 64c58ec2e3..369018738d 100644
--- a/lib/OpenLayers/BaseTypes.js
+++ b/lib/OpenLayers/BaseTypes.js
@@ -360,21 +360,24 @@ OpenLayers.Bounds.prototype = {
     },
 
     /** 
-    * @return Simple String representation of OpenLayers.Bounds object.
-    *         (ex. <i>"5,42,10,45"</i>)
-    * @type String
-    */
-    toBBOX:function(power) {
-        var mult;
-        if (power != null) {
-            mult = Math.pow(10,power);
-        } else { 
-            mult = Math.pow(10,6); 
-        }  
-        return (Math.round(this.left*mult)/mult + "," + 
-               Math.round(this.bottom*mult)/mult + "," + 
-               Math.round(this.right*mult)/mult + "," + 
-               Math.round(this.top*mult)/mult);
+     * @param {int} decimal How many significant digits in the bbox coords?
+     *                      Default is 6
+     * 
+     * @returns Simple String representation of OpenLayers.Bounds object.
+     *         (ex. <i>"5,42,10,45"</i>)
+     * @type String
+     */
+    toBBOX:function(decimal) {
+        if (decimal== null) {
+            decimal = 6; 
+        }
+        var mult = Math.pow(10, decimal);
+        var bbox = Math.round(this.left*mult)/mult + "," + 
+                   Math.round(this.bottom*mult)/mult + "," + 
+                   Math.round(this.right*mult)/mult + "," + 
+                   Math.round(this.top*mult)/mult;
+
+        return bbox;
     },
     
     /**