From d1875fd32e0aa7a093544b5decd0b43499424d4f Mon Sep 17 00:00:00 2001
From: xue <>
Date: Thu, 30 Aug 2007 15:40:24 +0000
Subject: further enhanced TCaptcha.

---
 .../Web/Javascripts/source/prado/validator/validation3.js   | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

(limited to 'framework/Web/Javascripts')

diff --git a/framework/Web/Javascripts/source/prado/validator/validation3.js b/framework/Web/Javascripts/source/prado/validator/validation3.js
index 3d43a5f3..62d6e718 100644
--- a/framework/Web/Javascripts/source/prado/validator/validation3.js
+++ b/framework/Web/Javascripts/source/prado/validator/validation3.js
@@ -1388,14 +1388,11 @@ Prado.WebUI.TCaptchaValidator = Class.extend(Prado.WebUI.TBaseValidator,
 	 */
 	evaluateIsValid : function()
 	{
-    	var a = this.getValidationValue();
-	    if (a.length <= 0)
-	    	return false;
-    	var b = this.options.TokenHash;
-    	if (this.options.CaseSensitive)
-    		return(this.crc32(a) == b);
-    	else
-    		return(this.crc32(a.toUpperCase()) == b);
+		var a = this.getValidationValue();
+		var h = 0;
+		for(var i = a.length-1; i >= 0; --i)
+			h += a.charCodeAt(i);
+		return h == this.options.TokenHash;
 	},
 
 	crc32 : function(str)
-- 
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