diff --git a/src/jquery.maskedinput.js b/src/jquery.maskedinput.js
index af67604..1e05de7 100644
--- a/src/jquery.maskedinput.js
+++ b/src/jquery.maskedinput.js
@@ -55,7 +55,8 @@
 			}
 			settings = $.extend({
 				placeholder: "_",
-				completed: null
+				completed: null,
+				autoclear: true
 			}, settings);
 
 			var defs = $.mask.definitions;
@@ -230,7 +231,9 @@
 					})
 					.bind("focus.mask", function() {
 						focusText = input.val();
-						var pos = checkVal();
+						if (settings.autoclear) {
+							var pos = checkVal();
+						}
 						writeBuffer();
 						var moveCaret=function(){
 							if (pos == mask.length)
@@ -241,9 +244,11 @@
 						($.browser.msie ? moveCaret:function(){setTimeout(moveCaret,0)})();
 					})
 					.bind("blur.mask", function() {
-						checkVal();
-						if (input.val() != focusText)
-							input.change();
+						if (settings.autoclear) {
+							checkVal();
+							if (input.val() != focusText)
+								input.change();
+						}
 					})
 					.bind("keydown.mask", keydownEvent)
 					.bind("keypress.mask", keypressEvent)
@@ -255,4 +260,4 @@
 			});
 		}
 	});
-})(jQuery);
+})(jQuery);
\ No newline at end of file