Sodium bisulfate will also control browning. It works by lowering the pH to inhibit the polyphenol oxidase enzyme. It lowers pH without a sour taste so it does not change the flavor of the food. 

Sodium Bisulfate vs Sodium Bisulfite

i open a web application in visual studio 2008...
it contain the tree view properties as,

            TreeNodeType type;
            type = new TreeNodeType();
            type.Type = "folder";
            type.ImageUrl = "Images/" + "folder.gif";
            type.ExpandedImageUrl = "Images/" + "folderopen.gif";


i dont know how this image tag comes.. and how to chage that...
